The Best Kept Secrets About high jump surfaces
https://blast-wiki.win/index.php?title=No_Time%3F_No_Money%3F_No_Problem!_How_You_Can_Get_high_jump_surfaces_With_a_Zero-Dollar_Budget
Similar to a lot of track events, jumpers have 3 efforts at each height. Heights are raised 2 cm after each round, and just those who clear the bar proceed to the next round. The winner is he or she who clears