I'm no biologist but crappie will take over a small(under 100 acre) pond in a short time. Gills and bass aren't like that and do better in smaller ponds. I like Beetle Spins in smaller waters. Change the tails as you wish. They let you cover water quickly, and changes in retrieve can cover top to bottom. A 1/2 or 1 turn of the reel stall will trigger bites from lookers at times.