Sizes #4,#6.This is a high floating bug that will move a lot of water when stripped in with quick pulls on the fly line. the bigger size offers quite a mouthful to whatever spieces your after, so be prepared for anything! These are a little harder to cast because they catch a lot of air, but once you get aÿgood length ofÿline out it gets easier. Sometimes it's a good idea to let the bass bug sit still for a few moments after it hits the water before starting the retrieve. Often, it's that first quick pull that gets the strike. The best retrieve is a quick pull, hold, quick pull, hold method.