Maybe the better question is should the diamonds be loose to let the rig flex off or tight to keep the sail full. And maybe I didn't state that correctly but hopefully you understand what I'm asking. The Tiger and Fox have tight diamonds, TheMightyHobie18 runs them loose. Even with tight diamonds the comptip is going to bend off with the squaretop. Pentex vs Dacron on the same mast, tighter for pentex?