After all the stuff I'd read in the Skydivers handbook I still didn't wave & pull on my first level of AFF!!! Damn. My altimeter wasn't tight enough on my wrist and I had trouble reading it. It kept "flying around". I was locked on it, after 2 prcp's, to check my alt and my tandem instructor pulled, at 5500. If you don't know how high you are, what do you do???? Arch and pull!! I got a bit scared after that cause I realized just how fast you lose altitude. Anyway, I'm going back this next weekend to give it another go. Anyone have any suggestions on the strapping on of altimeters, for tightness? What models do you guys think are the safest, most accurate, don't fly off, etc ??? Obviously, I'm a newbie but I've found my thing, I think :) thanks