Change SI 10.5 to:
10.5 For Mark Foy races there will be a warning signal (Flag G) at 1325 hours for all boats racing. At 1329 a card is displayed from the Clubhouse starting box showing the limit boats’ handicap. This is the preparatory signal for limit boats. The card will be removed along with one sound signal at the completion of that minute for the limit
boats, this is the starting signal for limit boats. The same procedure follows for each handicapped boat or group of boats. Each group will have its own card displayed as its preparatory signal. The removal of this card will be its starting signal.