Hi Rick,
Appreciate the intel. The big ones are definitely down there. I think picking your days to target smaller, less fished wrecks and rock piles, is key too. Since these pieces are not too big, technique to stay in the "kill zone" can be tricky and damn near impossible some days. I find when we fish this way, we need a condition that produces a very slow drift. This also allows you to hold with the smallest jigs possible, which I have found catches big fish better. Also, we are all fans of fishing the GULP grub on the high hook, but if you are hunting doormats, many have agreed that a small single bucktail, tipped with a nice strip bait is your best bet. I guess the flutter of a lighter jig is more natural. Also, when you are drifting slower, you have less chance of getting hung up.
Lastly, I have simple painted jig heads, no hair, made for these types of trips when we donate a ton of tackle. I find a 1 1/2 -2 oz plain lead head, with a 6 inch Gulp Grup and a strip of belly is a good bet when fishing this way. Light braid and a sensitive tip fast rod (such as the Diawa Proteous M or MH) are also important to keep a constant feel on your jig and bottom.
Also, short drifts and working the piece inside and out, using your track line to judge, are methods which help zone in on the target. Lastly, we use the man overboard button on the GPS when we hook up; anything we can do to make the strike zone smaller and smaller.
Frank