To start you time your kids wearing fins and doing streamline kicks underwater with fins - they can come up to breathe, but they can't take a stroke. Once you get everyone seeded you can play 2 games - Rocket races and scramble rockets. Rocket races- you put people in heats and they get points for touching the wall first. We play golf, so you get one point for first, 2 for second, etc. low score wins. The second is Scramble Rockets. Again you seed them into heats but they can't finish in the same lane they started in. So they scramble to get a spot like musical chairs. We usually do 25s on the 1 minute. So they get plenty of rest.