quite a while ago I did a small run of Pat Metheny Group shows that I stealthed it all by pretending I had just broken my pelvis. I wore a brace that went aroung my lower chest that had metal rids in it for support and walked with a cane( my stealth stand..). I stuffed a AT853 and m1 in every night and was never searched ever. One night they even brought me to my seat via golf cart.
I work sercurity now at several clubs here in Austin and I know the general procedure for injured people is," no search what so ever for liability issues unless its some crazy hardcore show. "
Just an idea.. ;-)