Both myself and The Fifer, do this task in our club, after the old bird racing is over, we clear the clocks, and this enables the members to use the same rings on their youngsters. Granted it is extra work, but we don,t mind, we laid down ground rules, which inform members a given date their rings and clocks must be in by. Also each member must supply a list of all birds he/she wishes an ETS ring to be assigned to. Mistakes do happen, but hey come on, we allmake mistakes