How fast would they have had to been going? That's over half a football field from shore. Did the boat ramp paradoxically angle upwards to give them extra lift?

Evil Kinieval's longest jump in his career was only 141 feet (unsuccessful, BTW). On a lightweight motorcycle. Using ramps. Driving at high speed. And he was TRYING.

Looks like old Thelma and Louise here beat him totally by accident.