This time I took the time to read your post.

If I may I would like to make you aware of the very dominant role of daggerboard aspect ratio number in the ISAF system. Something this leads to remarkable results where a board of say area= 0,2 sq. mtr. and depth = 0,75 mtr. will be rated no faster than the same boat with a miniscule daggerboard of say area 0,05 sq.mtr. and only depth = 0,35 mt.s (one quarter the size of the bigger board)

Also their is some arthmatic in the ISAF rule that makes singlehanders rather fast when compared to doublehanders.

Also the carbon to alu correction factor is strange as their is more performance difference between a mast with spreaders and diamond wires and a smooth mastsection (like H16) than there is between a carbon mast and alu mast, both with spreaders and diamond wires.

Please do not introduce those three "funnies" in your system.

for the remainder I think that you are pushing the TIP system a little bit too hard.

One more thing that is limiting spinakers size and shape is the fact that with increasing speeds the angle of attack decrease and only moderately flat and short footed spis can operate efficiently at those angles of attack. Even in light winds where the critical "twice the windspeed" barrier is quickly reached. It is my expectation that we'll see an even more pronounced trend to higher aspect and flatter cut spis over the years to come, even for light wind performance on windward-leeward courses.

Naturally Beam reach course, which may be the predominately course on the Worrell I don't know, are much less limit in this sense. This may explain the succes of teh huge spi of the Smyths.

To all; Guys, the development of this things is quickly entering the area's of complex interdependencies and therefor simple comparisons based on simple models and assumptions can lead to incorrection conclusions. We must be careful and take this into account.

Wouter