I understand how the texel system works, technically. My point was more of how it is administered or a legal issue. Under the US system all class legal boats would have the same rating. A class legal Tornado with a maximum sized spinnaker, a small spinnaker, a roller furling spinnaker or a flat reacher shaped spinnaker using a snail would all have the same rating. Would texel try to rate them differently?

Personally I thinks texel has too many implied assumptions in its calculations. I think the numbers were derived from sloop rigged boat weighing 18-22 lb per foot of overall length. It does an ok job with boats like that. It appears to have some problems with light boats and with unirig/spinnaker boats. That is just my opinion.