I would think this bigest hastle with parking a boat behind the house in most subdivisions would be backing it through some very tight places. I have to be really careful with mine backing it into the Morton barn and I have 60 acres to maneuver.

Years ago my Grandfather had a "walking tractor" this was a small tractor with two drive wheels and handle bars. You walked behind the tractor and drove it with the handle bars. You could attach a small plow, tiller, snow blade and other attachments to it.

I would think that a trailer ball on the front of one of these would be really handy spotting your trailer.

There you go all you entrepreneurs, Kohler 8hp motor, drive train, nobby tires. Call it the walking horse, make millions from your own back yard.