If using the owners, perhaps look at the sj38's. Go down to 1/0's too. Not sure what you're chasing that you'd want smaller, but there are some brands of super sticky sharp thin gauge hooks if you're fishing with light enough line. Generally, if chasing small species (wrasse, bakers, skippy), i've still used 1/0's. Have caught slimeys on 3/0's too. You can use owner octopus hooks in small sizes, but the tiny ones I mentioned might work better (i'll try and remember the name). There are some small hooks with inline eyes for running off bream trebles though. A couple of other good japanese brands, but I just cant recall them off the top of my head.

At the fishing shop, Woodvale, you can get I think 90lb shout assist cord that should do fine. The YGK cord I use doesnt come thin enough for my liking of really small assists, but I think varivas do their red braid pretty thin which would be ideal too (but the shout is under $10 a pack and still enough there to make a few dozen rigs). You can use the inside of the YGK cord, but it doesnt have as good abrasion resistance (but should be fine for small fish if you replace it when worn).

I generally like using sleeved assists with a rigging latch, but you'll need to make sure you can do the loop knot with your chosen hooks. The advantage of this method is its as minimal as you can get, as there are no bits of assist hanging off. If tying, if you use a overhand or double overhand knot, you can leave the tag inline with the hook and whip or heatshrink it. Additionally, if chasing small species, you could whip on some flash/mylar/etc to the hooks to give something tiny for small fish to hit if the jig is too big for their liking.

I generally prefer double assists, slightly different leg lengths.

Split rings, I like using the owner fine wires, size 4. (in fact, I still use them for PE2). For swivels, theres this brand I forget off the top of my head that are stainless, super compact and strong but I cant find them :(

Thanks for the quick reply. I guess what I was thinking is that with smaller jigs smaller hooks would be required, such as those on Shimano Lucanus jigs. Even though they're small they do seem to stand-up to serious fish. Can the Lucanus asists be bought pre-rigged?

 I use Decoy Cutlass from size 2/0 to 3/0, shout light jigging 1/0 to 3/0. Can't explain how I tie the assist but if you are interested, I m happy to show you. Have use diff assist cords so far and it is the thickness that matter not the poundage. I have opened up Owner Sj38 gold color ones in 3/0 using 20lb tackle so would stay clear of it.

If you are using light jigs 40-60g make sure your assist cord + hook is not more than half the length of the jig else you will get snagged easily especially when you are jigging in reef country

I've often seen elsewhere the reccomendation that the hook is at least as wide as the jig.  However,this means 3/0 -6/0 sizes even on small 40 and 60g jigs. 

Has anyone found its necessary to use a hook as wide as the jig with small jigs (<100g). (at the length of the assist).

I've often seen elsewhere the reccomendation that the hook is at least as wide as the jig.  However,this means 3/0 -6/0 sizes even on small 40 and 60g jigs. 

Has anyone found its necessary to use a hook as wide as the jig with small jigs (<100g). (at the length of the assist).

The reason for the hook wider than the jig is that it wont get caught on the jig. For a double hook rig, you're unlikely to hook both hooks on the jig, so at least one should be free. Though, sometimes a hook will catch on the line, not the jig. You're probably better off going with smaller hooks on small but wide jigs. You need to balance up the hooks being available (not getting caught on the jig) vs hooks hooking the fish (smaller hooks will work better targetting smaller fish). I think the benefits of the smaller hooks would outweigh the disadvantages if targetting small fish.

Though, i've caught things from a yellowtail scad to a 25kg+ sambo on a 3/0 hook. A lot of smaller fish will still take a 3/0 if they have biggish mouths (sgt bakers, skippy, small tuna, etc).

There are a few methods to keep the hooks away from the jigs, but just try the smaller hooks and see how you go first. If you get lots fouling on the jig, then time to revise then.

(and I might go for a quick plug of my youtube channel if you want to know how to tie any assists)

If you do try the Lucanus pre made assist hooks, get the larger gauge hooks.  I found the smaller fine wire ones tend to tear on big fish.

Yeah, that's true if you are using heavier tackle on those tiny hooks, tearing the hook out of fish's mouth is inevitable.

When I am tying my assist hook, I segregate them into light jigging ( PE1-2), PE3, PE4, PE5 & PE6. I ensure that my mainline, leader, assist cord and assist hook gauge (diameter) match.

Reason for this is because when I first started jigging, I have lost so many fish upon hook-ups while fighting the fish due to assist hook/cord v rod & line mismatch and have been a laughing stock of my mates.

Bear in mind different brands have different hook size standards. For instance size 3/0 of OWNER is different from Decoy 3/0 or any other brand for that matter. Hence it's hard to set a hard and fast rule eg. size 3/0- 6/0 for 60g jigs, unless it is brand specific.