Back when I RV'd, we tried out MH, Class C, TT, etc. We found that we liked a truck and trailer combo best since it allowed us to separate the truck and see whatever we wanted, whether city streets, scenic day trips away from the CG, tourist attractions, side roads, etc.
I think some of that might apply to the OP's situation...but the OP is quite interested in fishing. I'd have to agree with Grit....the two most versatile choices are a truck camper towing a boat or a Class C towing a boat.
FWIW, Alaska doesn't have as many "real" boat launches as most of the SW / PNW, so I have limited data points, but I'd certainly recommend nothing bigger than a class C if you intend to use the MH to launch your boat. Aside from the general enjoyment of watching other people struggle at the boat launch, it's really entertaining to watch the 30' or larger Class A's try to launch at many of the popular spots here in the Los Anchorage general area....almost always good for my boat-launching ego. :)
