You won't need a boat that big for Bernard. Might save some gas and see if there is a boat you can rent there. If you do bring your boat bring your down riggers. No bad spots on the lake...in fact...it is the world's largest body of fresh water without an island.
Fish species in the lake include smallmouth bass, lake trout, whitefish, yellow perch and rock bass. Because Lake Bernard is large and deep, fishing is relatively poor for bass, but quite good for lake trout and whitefish.