I like to see the fish that gets away verses not. A few weeks ago, I was trolling for walleyes on the SLR and while reeling one in, something grabbed a hold of it and fought hard for a while but chewed the walleye pretty bad. Trolled over the same are 20 minutes later and caught another walleye and this time it didn't let go and I saw what was eating my walleyes and it was a huge musky that got close to the boat and snapped the line and left with my crankbait and fish. So, the one I saw that "got away" was a cooler sight than the mystery fish that attacked my walleye that I never got to see earlier that day
Surface water temperatures range from 65 in the morning reaching low 70s during the late afternoon.
Minnesota has been best in shallower areas such as the Flag Island Flats (5-9 ft.) Prime time being the evening bite with many nice fish including a 31" beast. Deeper water around Four Blocks and LIttle Oak are providing good action for Walleye/Sauger. Orange has been the top color. Even with the recent Mayfly hatch and plenty of crayfish in fishes bellies, (Walleye, Sauger and Northerns) the fishing is awesome!
Canadian fishing has been the best using bottom bouncers in the mud with gold being the most productive color spinners. Jigging will produce fish around structure with larger Walleye/Sauger coming out of 26+ feet of water. Pike and Muskie action is somewhat concentrated to underwater weeds or occasionally while jigging for walleye.
I think you'd probably have to develop connections to find the right boats at the right price. If you could also increase the number of boats you do in a given season you could also start buying some materials in bulk which would help drive material costs down. Still I'm guessing margins would be relatively thin, certainly not a get rich quick scheme.
New Ice shelter coming this fall from Otter and Polaris specifically made for full size Rangers. This will be available through Polaris Dealers.