Hey, I'm no expert but this is what I know. Being detritus eaters, they like holes that funnel the "debris" to them. Look for stuff no deeper than 250 if you don't have a puller. Favorite spot drops from 120-250,300 quickly and is a broad area. Use the carcases from your filet, especially bottom fish. Throw in a pierced can of some nasty,oily,outdated seafood product from the local outdated food place. Spend the money and buy all weighted line as it is smoother and easier to pull/roll up. Tie 4 2-4 lb cannonballs in the corners so it goes down flat. Rig a pulley over edge of boat to make it easier