Frequency control at your club
sdr, at one club that I belong to, we use the same method as you, pin your frequency on the board......at another club I belong to, you must take a closepin with the frequency number attached to it in 1.5" letters and display it on yourself somewhere. You must have a pin before you can turn on a radio.....unfortunately, no method is fool-proof.....and you'll always have that guy that swears he didn't turn on his radio right after your plane goes down.
Mike