Ever wondered why three fin surfboards are called "Thrusters"?
Simon Anderson the creator of the "Thuster" explains:
"Thruster" is because the water gets pushed through the fins in the turn. The single fin (just) holds that speed through a turn. Whereas with the twin fins, obviously the speed was quickly released and you'd just zip along. But the third fin was controlling it, controlling that thrust through the turn."
To learn more about Simon Anderson and the creation of the "Thuster" check out this cool clip below: