Mark, I have a gas model, but can add a caution.
Use the best water you can to run Thur it. Well water has to many fine particles that will damage any power washer. I went Thur 2 electrics and one cheap Home Depot gas model before spending the big bucks.
Besides the boat, I use mine a few times a year on the pool deck, soffit and facia, windows, driveway, etc. After a few years, it has paid for itself.
Understand limited used equals limited need. Just baby it as much as possible and get as much water out of it as possible after every use.