Yamaha Jet Boat service?

[imyourhuckleberry]

Is there anyone else that will work on Yamaha Jet boats other than Irwin Marine? I am considering buying a pre-owned yamaha jet boat from another marina or in a private sale, but I wouldn't go that route if I cant get it serviced anywhere.

Irwin will service boats they sell, and will do warranty repairs, but if I suck up a rock into the jet drive and damage the impeller, am I really on my own? Its quite the monopoly.