Then build or buy a rowboat. Seriously, they have many advantages over motorized and other boats:
1) They're far cheaper to build, own, and operate than any powerboat. I have all of $200 invested in the boat I use for fishing most often. It takes no gas, requires no state registration, and the oars should last for decades.
2) No trailer is needed for most reasonably sized rowboats. That means no registration on the trailer, fixing lighting problems, flat tires, etc. I have built five rowboats, and three fit in the back of a pickup or on a roof rack. A wheelbarrow tire or two will make a simple dolly to get the boat to the water. Even my two larger rowboats are actually hand launched with a dolly, even though they go to the lake on a utility trailer.
3) Rowing is a perfect way to control trolling speed.
4) It's good exercise even if you don't catch a fish.
5) It's quiet and odorless (depending somewhat on the fisherman).
6) You can launch from just about anywhere on the shore that you can walk to, mostly making up for the usual argument in favor of powerboats - that you can get to the fishing spot across the lake quicker.
7) A simple rowboat requires little or no annual maintenance. My boats are plywood sheathed with fiberglass cloth set in epoxy on the outside. Inside and out are primed with Kilz and painted with standard latex housepaint. The latex will wear off after enough use, but I only touch up every two or three years, if I feel like it. It takes less than 10 minutes.
Most have room for your kid, hottie, dog, or whatever. You can stand up in some flat-bottomed models to cast. They are much roomier than any kayak, and more stable for youngsters or others who are wary of kayaks.
9) You can build one with your kids.
10) Rowboats are significantly faster than any belly boat or mini-pontoon when it's time to get off the water right now, and you can cover a lot more of the lake in a given period of time.
11) Even top-of-the-line custom made spruce oars are a tiny fraction of the cost of an outboard motor, much less than an electric trolling motor. Sporting goods store oars are less than the cost of a case of beer in many cases.
12) You can access many lakes that have great fishing but are hard to reach with trailers, difficult to cover in belly boats and similar contraptions, or simply off-limits to trailered or motorized craft.
13) Homeowners' insurance is all you need. No separate policy or rider for your boat and trailer.
14) If you're caught in a storm, you can beach the boat and flip it over to hide from the hail, or prop it up on one side and enjoy a cigar while waiting for the storm to pass.
15) You have right of way over vessels under power or sail, although many powerboaters don't seem to know or care about this.
Am I missing any other advantages?