RE: down line & up line snaps
fredo...flat turns are interesting, but they are not "legal" - meaning that are not included among the figures that could be made using FAI elements...the ama rules do bind imac to the fai catalog. pattern figures are not created from the fai catalog so they have more latitude in what they can write.
i am among a number of people who do not want to see inflated K factors for certain figures - as was the case a few years ago...but when I read posts like mike's it strains what is "right" when what are arguably the most difficult figures have so little impact on the outcome.