Originally Posted by MMACH 5
Keep a cotton ball in with your patch kit. Before you put the tube back in, run the cotton ball around the inside of the tire. If you missed any sharp pointies in there, it will hang up on them.
(I can't take credit for this one. I read it somewhere on BF.)
DON'T SWIPE YOUR FINGERS AROUND THE INSIDE OF THE TIRE CASING TO LOCATE THE SHARP POINTY! YOU'LL FIND IT, BUT YOU'LL ALSO FIND THAT YOU NEED A BANDAID. (Don't ask me why I thought this was a good idea at the time.)
Carry some basic first-aid supplies. You never know when you'll do something stupid and need them.