Took the boat out in too much air and threw my crew thru the mainsail. I was running a Tiger ST main and a new Tiger main is $1800 without battens. My boat is a TheMightyHobie18 with SX stick and magnum wings(don't use them racing). All the standing rig is SX and one hull is now from an SX. I have been racing the boat open with a 66.8 number, the boat cannot sail to that number with the Tiger main. I have decided to get a squaretop SX main from Whirlwind. So, no wings on when racing, oversized main, smaller self-tacking jib and F18 spin and pole. Basically an SX with non-standard main,jib and spin.

How would you rate it and what number should be applied?