H31 PHRF
Just had my 86 H31 rated by PHRF North West, 100% jib, roller furling, 3 blade prop and it came back at 215. There are other 31's at 209, 210 and so on. It is $35.00 to get a correct rating up here and worth it as it elimintes any guesswork, all you need to do is provide measurements.