One thing I learned about fishing is that if you want to catch fish, you have to go where the fish are...unfortunately it took me forty years to figure that out!
First off, you need to fish a lake with a good population of fish. If a lake hosts a lot of bass tournaments, chances are it’s a good bass lake. On the other hand, if it holds a lot of walleye tournaments, then it’s a better walleye lake.
Some lakes support bass, walleye and catfish tournaments...those are the good ones. Same with lakes with a lot of resorts on them, it usually suggests better fishing. Next, check out the guide