Be at the right place at the right time .General rules regarding the right time are as follows:
Trout are abundant when water temperatures are between 50ºF and 55ºF. For fly-fishermen, this is when mayflies are hatching and trout are feeding at the surface, usually from dusk to dark during the summer. For bait fishermen, the right time is early spring, when stream levels rise.
Smallmouth bass are abundant during spawning season (late May to early June) wherever the law allows. Cast to the shoreline with fly-rod lures.
Largemouth bass are all-season feeders, with depth more important than time. They will cruise the shoreline after dark, so use a flashlight sparingly.
Northern pike, pickerel, and panfish are all-season biters as well.
Walleyes can be caught during spawning runs where legal (late April and early May). After spawning, look along shorelines, where they tend to cruise in schools.
Landlocked salmon are ready from ice-out until surface temperatures approach 60ºF.