From what I understand about side planers (off shore boards) crankbaits are the way to go.

When you buy crankbaits look at the depth capabilities. You can also add snap weights to the line.

There is a really thick book that I own that tells the depths of a lot of them but I can't think of what it's called.

I've been told that you can use jet divers on those boards but not the big ones. You won't want to use crank baits on the jets either.

Hope this helps.

p.s. I have a Big Jon Planer mast and big boards that I'm thinking of getting rid of. Let me know if you might be interested.