nothing wrong with a rating beater... But good idea to work "the other end" of the ratings (high DPN vs. low).

In ideal conditions for your P15, you could put the foilers to shame especially if you have flexibility of scooting over shallow waters and sailing a shorter overall course?

I believe Rob R. won our local Hiram's race on a P15 once against a bunch of Nacra 20's which took a DPN hit because the wind direction kept the spinnakers in the bag both days...