I thought that's how you do a sit-up - keep the very lower portion of your back on the deck, bend your legs and then with your hands clasped behind your head, raise your torso up to touch your elbows to your knees. At least I'm pretty sure that's how my kids did it in boot camp. I'm sure somebody who has actually been there could tell you more. Good luck Brian!
Coast Guard Mom
SN Nikole Tetreault CGC Hickory Homer AK
SNOS Danyell Tetreault CGC Boutwell Alameda CA