Jumping John

When we returned to the day boat we swam around it for a while and the daring amongst us, including John, jumped off the back of the boat.
After about 20 min it was time to go back to the main boat.
When we returned to the day boat we swam around it for a while and the daring amongst us, including John, jumped off the back of the boat.
After about 20 min it was time to go back to the main boat.
TravelerHow high was the jump?
TravelerIt was several metres but Dad thought it felt higher
Traveler8.5 8.5 9 8.5 10!!!!
TravelerDad likes those scores