ive used a shirt at meets, it put an extra 30lbs on my bench max, the first of 3 lifts i failed cuase the shirt made my opening weight so easy i racked the weight right away rather then wait for the command,lol, that red light is embarrising but i made my last two lifts successfuly, and won the ""WAR AT THE SHORE" IN WILDWOOD NEW JERSEY MANY MANY YEARS AGO, it was fun, so have a good time bro, i actualy got my first bouncing gig from that show,lol, its always fun to meet people from all over , so have fun with it bro