I'm sure you'd have to ask the US Sailing Portsmouth Committee for a copy of their database. My guess is they won't show it to you. Portsmouth Numbers are like hot dogs - the less you know about what goes into them, the happier you'll be.

Your best bet might be asking individual clubs to forward you their results. However, you're gonna need an awfull lot of data to do any meaningfull statistics on the 'oddballs'. Based on my fleet's data alone you'd think that a squaretop makes a boat go slower, and a smaller jib makes a boat go faster.