SurfKiteSup said..
Did your leashes break at a joint or the cord? I know my Starboard Wedge was notorious for cutting my leashes. It must've cut 4 or 5 leashes at least
It is not the board that cut leashes, but the fins.
Always sand the trailing edge of your fins. If they cut a leash, they will also cut you.
Sand the with a Donaldson, so you get both efficiency and safety.
colas.nahaboo.net/surf/the-donaldson-trailing-edge/also, never bail out from the board with the nose pointing to the wave: the board will back into the fins and cut the leash, the wave pressure is huge.