I don't know much about the ISAF system,,, but we did do an experimental comparison of results from a distance race this summer, between our standard PN's and the Texel system. The differences in the overall results were not enough to change the 1st place in the event, however it did switch around the 2nd and 3rd placings.
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<br>What I did find odd was that when I was preparing, prior to the event, to score by both methods, I had some difficulty finding a rating for the H20 Miracle. One would expect this to be a fairly well known rating, but with the differences in boats between NA and Europe, I am not so sure. The Texel ratings listed a # for a Hobie 20 Formula, but this rating was considerably slower than the H21 and H21F ratings listed. See http://texelrating.knwv.nl/
<br>So that did not seem to be the logically correct value. My next step was to turn to the formulation tables,,,
<br>See http://www.texelrating.knwv.nl/descript.html
<br>UH OH,,, not enough time for all that measurement and calculation prior to the race.
<br>So my next step was to contact a region which is using the Texel ratings, and ask what they rated the Miracle at,,, which was 102, and seemed more in line with what I would have expected. But I am left wondering beyond a shadow of a doubt if that is indeed the correct Texel rating for a H20 Miracle. Does anyone out there know ?? Is there an official measurer somewhere whom can be relied upon to confirm Texel ratings for the many many variaties of cat's (let alone the common ones) in both NA and Europe ??
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<br>I must admit,, that as an experienced scorer and racer, my first experience with the Texel system left me with more questions than answers. And I know that was not the intent of the Texel systems authors.
<br><br><br>Keep at least one hull in the air !!!
<br>Alan Maguire