This is a bit harsh, but if you can afford a 2007 X2, you can afford an automatic rope release. Don't ever try to "rig something up" when it comes to safety. Take the time and money to do it right...it's your kid we're talking about.
Originally Posted by TxsRiverRat
Noone skis behind my boat ever again without a shock tube now. Seriously.
Shock tubes have a lifespan. Was observing in my buddies boat when a heavy guy who couldn't get out of the water popped the handle from 60' away and it came right at my head. If I hadn't been watching it would have been lights out. He had a shock tube on there, but it had no structure or "rigidity" left in the foam. Should be replaced every few years.