I took only a three second hit for the main. So with a code 5 main I would be 139 (base OD 145). My certificate also carries a six second hit for the 0.5 oz spinnaker I have; I didn't think it was larger than class so perhap I measured wrong! I'd definitely be interested in comparing certs. Funny thing is, I am happy carrying a lwoer rating so I am more likely to be accepted into the Van Isle 360 if it doesn't fold (max 135 rating, but they don't say no to close rated boats).
Mainsail only would yield good comparison. I think your OD main is newer than this mylar sail.
