I have a 2000 DC Lund Alaskan and I think it’s almost the perfect boat to go from river to lake. Alaskans are fairly light, easy to load, unload and pull down the road, have a relatively shallow draft and are built very well. I regularly fish with my Alaskan for cats and walleyes in the Red River and regularly fish for walleyes on Fort Peck, Sakakawea, LOTW and Devils Lake. They make 16 and 18 foot models also and if you prefer a tiller, that is also an option.
I’m sure there are other makes and models that would work well for you also, but it’s tough to beat an Alaskan for just what you describe.