A lot of times when I fish heavy structure and deal with snags. I lower my bobber/ lift my bait to just above the structure. Crappie are always looking up for a meal. They are sight feeders. I never fish with a swivel under a cork. When I float fish I have a slip cork a 1/8 split shot and a number 6 hook or jig. Hope this help don't be afraid to get in the brush its frustrating but you can land some great fish.