Ryan,

The class rules allow a maximum of 185 sq.ft. of soft sail main and jib combined. We have formulas for measuring square-top and pin-top mainsails, and jibs. However you elect to divide up the area between the sails is fine. Most of the jibs measure out at 44 sq.ft., so we typically cut the mains to 140+. There is also a maximum mast height, and the mainsail may not extend above the top of the mast.

Several members of the fleet are sewing their own sails from pre-cut pentex panels. Howard Alexander also sews them for sale through CFI (formerly IFG). Most of us are opting for a medium-aspect square-top and it seems to do fairly well. The kits come oversize so there is some leeway in how you cut the leech.

I'm the class measurer, so should you choose the do-it-yourself route, we can lay out and measure the sail before you cut it.

Regards,
Eric