Frankly a little speed should get the reserve out, if under 1000 feet you have a giant hole rip your canopy in half, chop it, go to reserve. If you have a collision and get spun up in an entanglement or thrown into line twists I wouldn't just deploy my reserve as it could make the situation worse. The lower you get the more likely you deploy the reserve without chopping.
*I don't know shit but at least I'm not talking about a total mal under canopy with a D license (no offense). :D Jubal E Harshaw, LL.B. M.D. Sc.D. bon vivant, gourmet, sybarite, popular author extraordinary, neo-pessimist philosopher devout agnostic, professional clown, amateur subversive and parasite by c