Do what a lot of power boaters do ... park your boat in a slip and use it as a summer cottage. Sailed in the Med a few years back ... large power yachts would travel up to 300 miles to fuel in Gibraltar ... and save enough to make it worthwhile.
A few years back that was done by many people. The high slip costs make it less attractive.
Take a 35 foot boat, at $150/foot = $5,250, Then add to that hauling, launching and winter storage which will add on another fifteen hundred or more dollars. Not using a boat still costs you money. - tom