i was watching some matches with efren and busta, and i noticed their closed bridge consists of them laying their index finger flat on their extended middle finger to close the loop. My closed bridge is made by first pinching my index finger and thumb together (like making an "ok" sign), and then pressing them into my middle finger. I was thinking maybe i was doing it wrong, then i found an old steve mizerak instruction book and thats how he made his bridge, in fact i think its where i learnt to make mine. Any pluses to making it one way or the other? does it matter?