I have done 3 IAD jumps which are basically hop n pops but the instructor drops your pilot chute after you exit. My last one, I had an 8 second delay from 3800 ft. I was getting very nervous. I was getting ready to pull my reserve and rolled onto my side. at that point the main popped. sooo happy! The risers hit me on the side and cut me up under my armpit. not fun!