Well of course buying anything as long as you have the money is an option. Sometimes people aren’t willing to sacrifice things though. In this case I’m guessing the OP doesn’t really want to drive an SUV or Truck around all year round to trailer a boat.
Storing a boat in the water isn’t nearly as bad as some of you are making it out too be (assuming its freshwater). Just scrub it once or twice when your out there swimming during the season and then have the Marina chemical wash it before it gets put on the trailer for winter storage.