Ach- BJ! My very first assignment in JV's after I had been working the wing on 4 man middle school crews. I stayed so far back that the WH finally "invited" me to join the rest of the crew
I rarely work it now but when I do, I always have the feeling my rear end is hanging out of my shorts for some reason.
Try to talk with experienced BJ's for insight. You won't hear much out there but if there is ever a screw-up, its in the kicking game. Also if you are dealing with passing teams, go over PI scenarios.
Also make sure you and your wingmen are up on your keys and responsibilities for pass plays at/near the sideline.