The model you state is a bit newer than my experience. The very first Yamaha water craft weren't too reliable, but otherwise okay. I used to work at a motorcycle/jetski dealer. But my advice is to take a safe boating course from your local office of U.S. Power Squadron or Coast Guard Auxiliary. Jetski's aren't well liked in the boating world, and if you can run according to the rules, you'll ruffle less feathers. And before you say something like "I've been boating all my life", I'd tell you the same thing. But Washington D.C. requires a class, so when I started running in those waters, I took it, I learned a thing or two. Mostly about navigation.
Oh, and have fun.