hull variation has its limits. This was originally put there so home builders could be reasonably expected to make minor mistakes and still build a one design boat. Professional builders can now build to within mms of stations and do to fair lines.. Still the hulls are one design.. I cant recall exactly the limits but I doubt if error margin is large.
As for the stick.. if the same mold is used or a "carbon copy" and layup is used then its still smod. Example the 49er .. the master male mold has had a few female molds pulled off it.. One was shipped to each continent for local "authorised" manufacturers to make a registered 49er hull.. The layup is defined and the mold is standard.
