Signal Mirror

If you drift away and want to signal the mother ship, on sunny days, it is more adapted and efficient than the bright colored 3 foot tube. Face the sun with the mirror and project its reflection on your hand. Move hand and mirror in synch until hand faces the objective -boat, airplane- with the sun reflection still showing on the hand. Remove the hand and fine tune the aim with the hole in the mirror. Keeping the sun's reflection on the hand while aiming at the target insures you that you are actually signaling it.