Where do you sail in Utah--I sail at Bear Lake every summer for a few weeks. There are a bunch of cat sailors up there, and you can get some amazing sailing conditions of all types. Also, the water color make you feel like you're in the Carribean. I've also sailed Deer Creek, Great Salt Lake, and a few other spots. Yes, lots of power boats--much more than sail. But that is true everywhere in the country.

Unless you sail with crew a lot, consider a spinnaker/snuffer set up instead of adding a jib. You'll end up being faster up and downwind through a broader range of conditions. I often sail in that configuration. Having said that, a jib would be fairly inexpensive to set up.

Try SidSports in Salt Lake and see if they can help you with the rigging, supplies, repairs you need. I think they were a Hobie dealer last time I was there, but I'm sure they could help out with a sweet boat like the N5.5.