Of all the things to worry about as a new diver I think bouyancy control while ascending is the one I am most worried about. On my first OW dive around 15-20ft I ended up on the surface without even realizing I was ascending. On another dive we were at about 40ft then slowly easing up to about 20ft. Because of reduced visibility in the quarry I didn't realize we were ascending. As we went up the air in my BCD inflated and I started moving up above the rest of the group. I realized what was happening and turned to kick down while dumping air. I managed to get back with the group without getting more than 5-6ft above them. MY worry is in a 45-55ft dive in the carribbean ascending straight up to a safety stop. Do you start dumping air immediately as you start ascending or do you do it as you need too, or do you try and predict and do it before you need too? I don't want to float away! Since the certification class I did get a computer (Cressi Leonardo) that can alert me when I ascend too quickly. I have had a little practice with it. According to my log on the computer I am still coming up too quickly at some point in the dive. I figure as I ascend I will have one hand on the BCD inflator and one hand on the computer to watch what's going on.