My system seems to work so far:

1. Do not get in an x-ray line if it's empty... pick the one with a couple people in front of you. The hand-searchers and swabbers work continuously, so you're screwed if you pick an empty x-ray machine.

2. Do not sit in the seats closest to the counter at the gate. Sometimes the gate agents pick a few people from the gate area--usually the ones closest to the counter.

3. Follow Flies2Much's system: get in line just as the screeners have picked someone, so that they're busy while you board.

4. Write to your local paper, Congressional representative, and the TSA to help institute a "trusted traveller" program and get rid of this random nonsense.