You've got to come out with the mangoes - you'll learn a lot more than I can write here. In short:
- Any of the Berkely 3" and 4" minnow styles work well (especially in GULP), my fave pinky SPs at the moment are GULP 3" minnow in Pumkinseed, and GULP 5" Jerkbait in Sapphire shine. But most of the colours are great, in the normal Berkley power minnows some good standbys are pumkinseed, smelt, bloodworm, and the trusty pearl/watermelon. The realistix minnows are also very good. Jigheads of 1/8 oz will do the job most days, go up to 1/6 if the drift is fast, down to 1/12 if there is not much drift. Bullet or torpedo shaped jig heads are better than balls for snapper. A great all round jighead is a Gamakatsu darter 1/8 oz in 2/0, especially for 4" plastics. For the 3" plastics I like a 1/12 oz with #1 or #2 hooks.
-Retrieve is easy - cast out, let the plastic sink to the bottom (you'll often get a hit 'on the drop'), jerk-jerk, let it sink, retrieve some line, jerk-jerk, let it sink etc. As long as you're working your plastic near the bottom, with plenty of pauses, you're on the money.
Your HB background will also serve you well - the HB brigade have been doing better recently in terms of size and quantity of fish. But I reckon SPs are funner :wink: