I assume you mean Jupiter Island, but I might be wrong.
Anyway, we cruised by it a couple of months ago. Hobe sound is fantastic if you like mother nature. Very pretty. Lots of cool places to see, one of the best is St. Lucie river state park. About 900 acres of natural beaches, over night camping. If doing that, you may leave your boat tied up at the decent docks there. Since we were sleeping the boat, we could not stay. Look out, it is shallow.
Ended up moored at Pirates Cove in the Manatee pocket, a resort with lots of charter fishing boats, a pool and an okay restaurant.
We actually stayed at the Courtyard Mariott on Hutchenson Island, great view of the ocean and on the beach.
We had hoped to kayak around in the cypress swamps and in the 10,000 acre Dickerson <sp> park, but the threat of bad weather chased us south to Palm Beach.
Do a google search for "best boating in Palm Beach" and a lady has a ton of photos and detailed information on several spots along Jupiter island. It is a terrific site!
Hope this helps, have fun!!