Your #6 is adequate for bones, but won't last a heartbeat for permit provided you can find one. You can catch bonefish off the docks, but it is tough because of the grass on the bottom. Wiggle jigs seem to work good with spin outfits, especially if tipped with hermit crab, or any crab you can catch. Save your dinero and hire a guide for a 1/2 day and see if it's worth it to put you on fish.