The contest starts when the "jockey" positions his or her frog and then yells, screams, jumps up and down, puffs, blows, whistles, or dose whatever else is necessary to incite the frog to jump. The one thing that is not allowed is any kind of physical contact with the frog. Each frog is given 15 seconds to jume three times. Once a frog has mode its thee jumps, an official measures the distance from the center of the pad to the spot where the frog landed on its third jump. Naturally, the winning frog is usually the one that jumped in the straightest rather than zigzagged around. Some frogs frustrate their "jockeys" by jumping bock toward the launching pad after a spectacular frist or second jump.