Hi, I just wanted to add that even frequency boards aren't fool proof because fools are very clever (I'm one of them).

When I was new to the sport I started with gliders and my Dad had one too. At a meet I went to the board to get my peg and my Fathers which was fine, but the mistake I made is I handed him my peg instead of his. When he finished flying he put "his" peg back on the board and I carried on flying.

Then along comes third person and presto, two people on the same frequency, both believing we had the peg. I was in the wrong. No harm done but man I was embarrased. Have never done it since.

The two things I learnt from this:

1. Always get your own peg and let other people get their own peg
2. Don't trust anyone.