I believe this could be the way ahead.
Saiwave and programms like Hal can report data direct to RYA uks PY compterised system , which will in turn can send back suggested ratings for racing , honed to your conditions at your club, regionally national ,class specific or even the "dreaded" personal level, the more data rec'd the better it gets .

Takes the best of a measurement system and the fine tunes to your requirements.

At the begining of the season I spoke to Bas Edmunds of RYA who runs the system and he has/is set up system to deal with schrs formatt ratings , texcel wouldnt be a prob either .

This system can butts data to YOUR requirements and report back , it is automated once set up and not a bunch of dudes sitting behind closed doors dreaming up numbers.

At my club we are setting up to do this , unfortunately the wheels of progress are slow , but once the IT dudes get their act together (unfortunately another story ) it should be in place for next season with a years historical data to be assessed and provide ratings for next year.