Skydiving is addictive, well it was for me anyway. Got grounded twice and nearly had my licence taken off me for going beyond the limits. Basically the lowest you can go for dumping your canopy is 2200 ft, so if you have a problen with your main, you can cut away and dump the reserve. However, I went down to 1200 one day just for the fun of it. If I'd of had a problem, I wouldn't be writing this. The chief Instructor wasn't impressed. I used to use a Delta wing canopy some times, it had a 50% malfunction rate, what fun it was too.
Yogi.