Going to be my first full year of bass fishing. Last year I targeted river smallies in early summer to early fall in the Saginaw area and Port Huron area. Also made some trips up to caseville and fished the bay around north island with some success. I’m now absolutely hooked and I’m itching to get my first ice out bass of the year. I’ve got about a thousand questions especially never having fished early spring. Here’s a few of em. Do majority of smallmouth leave the river systems during winter months? If so when do they come back? If I were to head to caseville to fish in about two weeks how would I target them in this cold weather? I’m assuming they should be deep? If so how deep? Do smallmouth ever spawn in small river systems? Would it be worth targeting them yet? Iknow really long post sorry about that Any advice would help tremendously thanks!!