You’re right, it’s not JUST the plane. It’s the mission and the end state. My Quicksilver Sprint would fly off floats fine with its 40 HP, but it’s single seat and has a 60 mph Vne. I’m sure the KF would work with 60 HP, but as a single seat plane. I want both seats to be filled. Personally, I never thought putting 80 horses on a KF3 made sense with the under cambered wing and a 100 mph Vne. But I’m sure it would get off the water at gross. It was also the only realistic 4 stroke option before the HKS was available (that I recall). We all build them different for a reason.