Regarding your seat problem... One you get it firmly into the position you want, leave it alone (yes, rap the pegs with with something to seat them deeply). Contrary to Hobie instructions, don't take it off when trailering. As long as you have it strapped and bungied down properly, you'll be able to tow your AI to hell and back with no worry of it fluttering away.
Congratulations on joining the AI club! It's amazing a watercraft so utterly fulfilling comes at such a relatively cheap price.
You're not out of the woods yet, though. Besides accessories you'll be purchasing, your wife really should have her own boat. The vacations you take will become mind blowing. My beloved & I are planning '09 vacations already... Another camping trip on Lake Powell, and a trip to the Doe Bay resort on Orcas Island in Puget Sound ( http://www.doebay.com/
You won't believe how exhilarating it will feel when that first gust of wind propels you forward on your first sail!