This is my second year of fishing primarily for bass. I have been learning quite a bit from reading here and trial-and-error on my own. Over the years I've bottom fished, bobber fished, trolled, cast-and-retrieve, you name it. I learned when I fly fished the rivers on the north shore of Lake Superior about changes in what the trout were feeding on depended on the cycle of the insects in and on the rivers. There were fly patterns for larval and nymph stages as well as dry flies. The really serious fly fishers would use a fine net and seine the creek or river to see what kind of insects were present and then tie fly patterns to match. My question is, does a similar thing happen with bass and if so, how does one judge when it's time to change tactics. I love top-water fishing and that's mostly how I catch fish. I've had pretty good luck this year with scum frogs. In the last three outings my partner and I have taken 10 fish from 14"-20" on frogs. We also regularly pick up bass by trolling along weed beds with a #5 or #7 shad. I know a lot of guys here and on the lake I fish use all kinds of worm baits and other rubbery things. Anyone have any insight into this question. Do I change baits seasonally or just keep throwing frogs as long as they work?