Spring time Bass fishing on the Chain offers the opportunity have 100+ fish days! Largemouth and Smallmouth can be caught in big #'s with average size fish in the 2-4 lb range! Platic worms rigged "weedless wacky" are the best!! (Thanks Pat Dwyer) The month of May offers fast action and quality fish.
The best Smallmouth bite for me is Fall for big fish (5-lbers are not uncommon) but spring and summer can also be great at times depending on weather.
Walleye fishing really heats up in June and catching 15-20 fish is not uncommon when the bite is on. Big fish can also be had! I routinely boat 3-5 in the 27+ range every year! Other good months to fish Walleye include August and October. And of course I love ice fishing!! (31" 10.8 lbs caught 12/10)
I don't spend near the time fishing Muskie I use to, but when I do it seams Aug-Sept remains the best. Deep water far out produces the old weedbeds. The Deep Green Cabbage has given way to all kinds of foriegn weed growth. It's not good! Boat traffic also, I believe, has pushed the fish deeper.
Nice size Crappie are available in numbers, however, the nice Perch are scarce these days. Spring & fall are best.
By targeting the most prevalant fish species at the right time of year your success is guaranteed to increase!!