Texcel of the two - SCHRS has anomolies and a two tier system that biases boats MEASURED before a certain date with an advantageous rating against those built before that date but not rated ,2007 I think is said date (basically schrs assumes all boats MEASURED after "2007" have their waterline equal to overall length !!!- the shorter the waterline length the better the rating when its measured ) , it also heavily handicaps solo sailers against two up .

TEXCEL MEASURES ALL BOATS THE SAME WAY .

Both systems are inheritantly flawed in the assumption that all cat sailers weigh 75 kgs .

yes you guessed it I'm a 118kgs solo sailor , with a boat built built pre 2007 with a significantly shorter waterline , but not MEASURED pre 2007 , that gets humped on hcap regularily !!

Dont worry about schrs and ISAF - isaf dont really have anything to do with running of schrs other than providing an umbrella.

I'll dig my hole now and batten down for flak .