I never broke mine despite 9 years of active use and a bunch of Nationals. And just hole from one collision- Kath. Garelick hit me 20 seconds after a start at a NAs when I was on starboard and she wasn't. And stiffed me for the repair.

Boat was just fine, especially after I learned to epoxy Kevlar fabric strips on the rudder top edges to keep them from splitting. There was a problem with Nacra 6.0s, as the H20 chute was too small.