I wondered about cool temperatures in regard to canoeing because a lot of photos here on blooms that have bloomed and show the trait are described as not fully open due to the cool temps. So far I just have one daylily that displays the trait. I really don't have cool temps here during bloom season, but on warmer night/day temps that one does open almost flat and the canoeing is not so noticeable. I have a few seedlings using it as a pod parent. The pollen parents haven't curled up, so I'm curious if it will show up in the offspring. In looking at photos, canoeing also seems strongly associated with those lavender/blue eye type blooms.
@Floota suggested it might be traced back to 'Paper Butterfly' (from an earlier thread). After she made that suggestion I did spend some time tracing parentage and, in fact, a good many of the blooms that show the trait (in photos) do trace back to 'Paper Butterfly'. Unfortunately, IMO, some blooms that got away from the color/pattern and showed canoeing still could be traced back to 'Paper Butterfly'. That seems both good and bad to someone who doesn't care for the trait. It means the trait can be separated from the usual color/pattern, which would be good. But then it also means it can be transferred to other color/patterns, which isn't good. I still see it most often depicted in the lavender/blue eye photos. My guess is that is strongly associated genetically with that color/pattern combo, but is expressed as a trait more prominently when opening in cooler temperatures. All speculation unless someone designs a more scientific approach to test it out.