@Gym, very true.
For most of my young life (roughly a 25 year span), I was a self designated "boat leach". My dad, two brothers, 5 friends, and and 1 brother-in-law all had boats on St. Clair. I spent most of that time on one of two offshore boats: my brother's Formula 311, or my buddy's 42 fountain. My job was to bring food, beer, and occasionally pay for gas when they weren't looking (ouch!). All said, it was a great deal! I took the U.S. Power Squadron class (
http://www.usps.org/edonline/) twice - although that was over 25 years ago - and owned a stand up jet-ski for about 5 years back in the early 90's.
So fast-forward about 10 years, I'm now married with two kids, 5 and 2 and miss boating and all my boat friends (almost all of which still have boats). I had an opportunity to take my wife and kids for a short ride on my buddies Sugar Sand a few months back and they loved it. So the wheels in my head immediately began turning.
Basically, my family of four would be the most common crew, but I could see wanting to take up to four more with us occasionally (many friends with 1 to 2 kids as well). A 21-23 foot jet boat seems like a great (and child-safe) way to see if my family likes boating, and maybe some day move up to something bigger. Heck, the way things are going, some of the bigger boats might be jets in 5 years!