First off, not to be rude, but I'm going to respond in English. Me trying to response in French would be a laugh, so if someone wants to translate please feel free. Having paddled a V10L for a week at one point, and having paddled an original version of the Nelo Vintage ski for a year, I think the answer is seating position, not just footplate adjustment. The Nelo Ski position is far more upright and more K1-like, and there is virtually no hump. The result is that your legs don't rest on the hump at all, even when surfing. So different muscle groups hold them in position without intermittent support from the hump. Bucket time fixes this as you adjust to the new position and your legs will get used to it. I suspect that most paddlers coming from a K1 have no such issues. But for a full time ski paddler, there can certainly be a transition. Give your legs time to condition to the new position and you may have not problem at all. Hope this helps.