A piece of yellow foam is used to keep the golf ball from going into the cup, so a golfer does not touch the inside of the cup or flagstick when the top of the cup is a couple of inches above the putting surface. The yellow foam is from Foam Noodles (www.foamnoodles.com). It cost about $1 per lineal foot and it was previously used on top of the walls on the club’s ice hockey rink. An 8-foot long piece of a yellow foam noodle will do all 18 regulation cups and it comes in various colors. Rob Fisher, superintendent at the Kinsale Golf & Fitness Club in Powell, Ohio, sent this to me.