Hydro foil

 Hi all I have been wondering if adding one of those hydro foil type fins will help my new dinghy at low speeds . I am finding that on the plane my boat is great but as i am getting onto the plane or motoring in the 5 and 8 knot zones the boat is abit of a pig and sits with the nose really high up in the air, hard to see where i am going. I was wondering if one of these would be a quick fix i have a Yamaha cv 30 on stessel 4.2m.

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beau's picture

Posts: 3834

Date Joined: 24/01/10

Same issue with my 520 side

Fri, 2018-03-23 13:30

Same issue with my 520 side console with the 115 on the back. Interested to hear the replies

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Posts: 251

Date Joined: 19/06/14

Well worth it in my books

Fri, 2018-03-23 13:49

 I added an se 300 to my Yammie 90 , made a world of difference . It lifts the bum up at low speeds and gets you onto the plane a wee bit easier than it did prior to install. Four holes in the cav plate and away you go 

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Dale's picture

Posts: 6405

Date Joined: 13/09/05

Fri, 2018-03-23 14:36

 Go for it, got one on my motor and I’m a big bloke, so the back sits down a bit, but with the hydrofoil, it behaves itself nicely, especially at speed. Planes beautifully. 

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scotto's picture

Posts: 2151

Date Joined: 21/04/08

definetely

Fri, 2018-03-23 14:37

I had the same issues on my tinny, with both fuel tanks, my fat arse, battery and a 50hp four-stroke all at the back end. basically I couldn't see over the nose at less than 12-14 knots

a hydrofoil fixed it instantly.

Son81's picture

Posts: 30

Date Joined: 19/02/17

Good

Fri, 2018-03-23 15:59

had one on my old 4.2 tiller was great and now have one on my 5.2 quintrex side console top Ender  the console is quite far back making the boat back heavy hydro does keep the nose down nice only down fall can throw the ass end around sometimes quite bad in a following sea but get used to it pluses and minuses 

carnarvonite's picture

Posts: 7602

Date Joined: 24/07/07

Last Resort

Fri, 2018-03-23 16:13

They should only be used as a last resort because they provide lift on the arse end of the boat and this is exactly what you do not need in a following sea.

 

Try moving weight forward to better balance the boat or have a look at the position of the outboard leg to see if it can be lowered any further

gruntre69's picture

Posts: 437

Date Joined: 15/10/16

 You can get them now that

Fri, 2018-03-23 18:37

 You can get them now that don't require drilling the cav plate, I'm thinking of trying one.

www.ebay.com.au/itm/SE-SPORT-SE400-NO-DRILL-Hydrofoil-Marine-Boat-Outboard-Sterndrive-40-350HP-Grey-/222101227893

still trying's picture

Posts: 78

Date Joined: 27/06/17

 Thanks guys i usually throw

Fri, 2018-03-23 21:09

 Thanks guys i usually throw the fuel tank im not using up behind the front seat when i can at around 10 knots it gets abit better. Good to know about the following seas didn't know about that before only read about the positives. 

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Rugbynut's picture

Posts: 23

Date Joined: 15/01/17

 i have a Permatrim mounted

Tue, 2018-03-27 11:13

 i have a Permatrim mounted on my 5m cc.  bloody brilliant.  marine grade ally.  i step on it to get in and out of the boat. strong as and is very effective.  while cruising yeh can see the bow go up and down as you trm.  removes all the bs trying to get out of the hole.  just moves up onto the plane.  Ive had it for 20 yrs no i guess.   dont get a plasric one IMO.  They are also colour coded to motor make.  yep have to drill holes but so what, you are mounting it on the motor leg not your car dashboard  haha..

Posts: 2813

Date Joined: 03/03/10

skeg saver

Fri, 2018-03-23 21:54

midway marine is the place to go if you want a skeg saver as well brilliant piece of kit made from marine grade s/s and no i dont  work for midway 

Pitty's picture

Posts: 155

Date Joined: 08/12/12

 

Tue, 2018-03-27 19:28

 

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 UBIQUE

still trying's picture

Posts: 78

Date Joined: 27/06/17

 Ive noticed online that

Tue, 2018-03-27 20:13

 Ive noticed online that there are some that are not as wide and more of just a tail. They are saying that they have lessened the risk in following seas 

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Rugbynut's picture

Posts: 23

Date Joined: 15/01/17

 yes they possibly do but

Wed, 2018-03-28 08:14

 yes they possibly do but probably also dont work as well either in the primary roll of trimming the boat.  i have honestly never really noticed any issues in a following sea.  And if this is noticable id imagine it is in only in big seas.  How often arecyou out in that?.  IMO the benefits far out way the downside.  for eg beingvable to keep the boat on the plane at much slower speeds in sloppy conditions instead of wollowing , bow up.  my boat is a CC so this was the case pre fitting.

still trying's picture

Posts: 78

Date Joined: 27/06/17

 Yeah i have been thinking

Wed, 2018-03-28 13:17

 Yeah i have been thinking that myself. I don't go out in dodgy seas as i usually have my son or misses with me and wouldn't like to put them in danger. Although i have had a bad instance with following seas when i was taking my old dinghy out but that was caused by dinghy being under powered and the waves were overtaking us, not a good feeling, one way to learn your limits thats for sure. 

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Faulkner Family's picture

Posts: 13551

Date Joined: 11/03/08

 years back with our first

Wed, 2018-03-28 15:20

 years back with our first boat an 18foot fraser running a 90 hp on the back. we had the same prob, fitted a fin to it and it was much better ,picked up quicker and a bit more stable when travalling. never realy had a prob with following seas. 

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RUSS and SANDY. A family that fishes together stays together

Deckie's picture

Posts: 1127

Date Joined: 03/04/09

Fast Tail

Wed, 2018-03-28 15:45

 I have a "Fast Tail" fitted to the 90hp Merc on my 5.4m. It was there when i purchased the boat & i have had no reason to remove it.

With 100lt of fuel on the ass end and sometimes 2 people sitting there as well, it lifts the back up & onto the plane nicely.

In regard to a following sea, the trim button will help you with that. In fact i have found that having the tail on is like power lifting. Trim the motor out & the bow will lift a little quicker than normal.

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Cheers & Stay safe

Posts: 491

Date Joined: 30/12/09

 i had the SE300 on my poly

Wed, 2018-03-28 16:52

 i had the SE300 on my poly craft on a 175 suzi and had no dramas in a following sea in fact like deckie said i reckon it helped the boat more than being a hinderance. 

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 Get busy living, or get busy dying!

Posts: 148

Date Joined: 18/10/12

 we put one on our 4.2 with a

Tue, 2018-04-03 07:52

 we put one on our 4.2 with a 40 yammy, made a world of difference at speed and at low speed, highly recommend it. we tried the one where you dont have to bolt it on, it didnt perform, went with the bolton version and it performed awesome.

ranmar850's picture

Posts: 1774

Date Joined: 12/08/12

I think to following sea thing is only an issue with some hulls

Tue, 2018-04-03 08:15

 I've heard it can be an issue with some, but I've owned two boats with them fitted, put them through all kinds of shit, and it was only all ever good. I wouldn't say it was an issue with in general, just be aware of it, get some feedback from owners of your particular hull.

still trying's picture

Posts: 78

Date Joined: 27/06/17

 Thanks heaps guys I took the

Tue, 2018-04-03 08:50

 Thanks heaps guys I took the boat out for the first time with 4 of us in the boat and unless i flattened it to get it on the plane it was taking ages to plane i was driving around gently at times as we had boats around us as we were all checking out what all the birds were after. I think i will go for the se 200 which is for motors 8-30hp. Really appreciate the feedback for both sides will definitely update with results, still am a little worried about following seas issue as used to do abit of beach launching but am planning to use ramps abit more now

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Curndog's picture

Posts: 259

Date Joined: 21/11/16

Sting ray

Fri, 2018-04-06 17:20

 has anyone used the stingray XP1 hydrofoil? Bit cheaper than an se 300. Are they same same? Or better off paying the extra?