Adjustable Transducer Mounting / Thru Hull

 HI All, 

I have a 4.8m ali that is used predominantly for beach launching. Dry retrieve onto the trailer (i.e. skull drag up the beach away from wave surge, then wich up) and depending on swell conditions at times its a dry launch. Im currently using a 587, P66 transom mount. Given the launching / retrive i have snapped a few trannies of the transom so im chasing some info on how to stop it from happening. 


Firstly, thinking of going to a thru hull, however given the boat is dragged along the sand to retrive im concerned the face of the tranny will become scuffed, is this likley to affect the reading to the point where its not worth pursuing? 


Or, im chasing ad adjustable bracket so i can slide the tranny up while preparing to come into shore and drop it down once ive launched. The current setup where P66 'kicks up' with pressure from the undersigned works most of the time, however as i said, have also brocken a few and the $$ of replacement is adding up. Chasing a bracket Simialr to the attached image, cant for the life of me source one from anywhere. 

I do have a 200B tranny in the shed and the 50kh equivalent, designed for 'in-hull' install, is anyone aware of a bracket for those models to be converted to a transom munt?


Few questions i know, curious to hear any similar setups or solutions. 




Image Upload: 

mjohns's picture

Posts: 337

Date Joined: 11/01/07

pretty easy to knock

Sat, 2017-03-04 09:57

pretty easy to knock something up, we made one that can be pretty easily moved up and down and the pole extends above the top of the transom so your not dicking around hanging over the side.. we dont use it for beach lauching or anything but only to get a clearer sounder reading

quest's picture

Posts: 248

Date Joined: 03/08/15

Hey Jimmy Ive got a drop down

Sat, 2017-03-04 20:08

Hey Jimmy 

Ive got a drop down bracket that you can have for a carton of beer. 

Send me your phone number and I'll send you a picture of it. 

gruntre69's picture

Posts: 533

Date Joined: 15/10/16

 I was looking at these too.

Sun, 2017-03-05 10:01

 I was looking at these too. I believe the bracket pictured is made by Airmar but is no longer available.


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timboon's picture

Posts: 2924

Date Joined: 14/11/10

 I was hoping someone could

Wed, 2017-03-08 09:24

 I was hoping someone could help old mate out with this as i am looking for the exact same thing also!!


So help if you can!!

Seaquest's picture

Posts: 1132

Date Joined: 22/10/09

 I have the one pictured

Wed, 2017-03-08 09:58

 I have the one pictured above I no longer use. A carton of beer and you can have it.

timboon's picture

Posts: 2924

Date Joined: 14/11/10

 PM sent Seaquest

Wed, 2017-03-08 10:00

 PM sent Seaquest

z00m's picture

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Date Joined: 10/05/14


Wed, 2017-03-08 10:02

Would this sort of thing be what you have in mind? BCF sell them.


Posts: 21

Date Joined: 22/03/12

 was looking for something a

Fri, 2017-03-10 19:27

 was looking for something a little more user friendly and robust. looks like Timboon might have beat me to it. 

Posts: 326

Date Joined: 18/10/10

Which is great

Fri, 2017-03-10 22:32


when it was your post. The term drop in comes to mind

Marineboy's picture

Posts: 839

Date Joined: 14/03/14


Fri, 2017-03-10 22:47

think you got shafted there jimmyb  


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big john's picture

Posts: 8725

Date Joined: 20/07/06


Fri, 2017-03-10 23:04



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Jigs available online in my web store!