I use a custom made (by me) St. Croix F70M-BK, 3/4 -3oz rod.
I use a Penn Squider 146 reel, with 30# test (12# diameter) Fireline.
I use a 30 or 40# Flouro leader (Seaguar) with SS Mustard 4/0 wide gap hooks #37160S
My leader is about 30" long with the hook snelled to line.
you can use a 2 hook system, but found that more times then not the 2nd hook just ends up in your hand when trying to get the hook out of the fish on the other hook.
I have a swivel at the other end tied to the Fireline with a fish finder.
I use any thing from 2 oz to 6 oz what ever it takes to hold the bottom. You must be on the bottom or forget about getting any fish.
Some of the hooks have bucktail tied to them, some have plastic squid skirts, others have nothing.
But all are tipped with Squid or Sand eels to get going, then I start using Fluke belly's.
If the water is moving slow I use a long bait (6 to 8") and if the current is moving fast I will use a short bait (4 to 6)
If you are drifting and getting a lot of misses cause the current is moving you need a short bait so the fish will get right up on it or you will lose it everytime!!
Most fish are in the teens to 30 or so feet for this type of fishing.
If you want to fish deep water (50+) then I go with Bucktails in the 4oz range. 
This is tricky, cause to use bucktails you need to be jigging straight up and down, or the fish don't want it!! If it gets angled out away from the boat you need reel up and start over. 
You can slow the drift a few ways, drift sock, 5 gal bucket or by shifting in to reverse. What ever it takes to stay slow so that the jig is straight!!
I just bought some nice Spro Jigs in Pink & White, which are good colors here.
 
Last, if you want to try for HUGE!! then find a place known to hold fluke, mostly deeper water for the big ones. 
Then live line Scup!! Scup here are to be 10" for you to keep but being the rebel I am i will take some small dolly scup 4" and use a good hook, I like 6/0 Gamy Octopus hooks.
Again use like a 30" leader with the floro leader, and fish finder with what ever weight you need to get that scup to swim on the bottom!
I got two 13 pounders in a row on a wreak, that we have here. on the scup.
OK there you go for starters, let me no what else you want to know.
O yea USE A NET!!!!!!!!!!!!!!!! You get that big one you will lose it for sure if you are trying to lift it over the side!