Hi Will

The glass boats would be built within the tolerances, but theres a variation in the hulls shapes, mostly in terms of the amount of rocker I believe, they, along with the three different hull shapes shown in the plans, would all fit within the tolerances, including the original design, but have varying amount of rocker and would also produce various amonuts of hull volume.

Some have said the Boyer hulls don't have enough rocker in the hulls, but like I said the results are on the board. Its said that the Faye and Bovis hulls have the correct amount or seem to be the fastest shapes, but neither the Faye, Bovis or Boyer hulls shapes are available to build in timber, as such the glass versions are at the front row at the Nationals.

This is only my take on the situation, I've never sailed a Faye, Bovis or Boyer hull, only the original. So someone else with more experience in the varied hull shape can probably give a better answer.

Regards