Yes with the Skywagon flaps, no for any flap handle doo-dad. I like having control to cinch up tight when I want to be glued to the seat. I've never felt at risk loosening the right side a little to grab the first notch. After that there's no issue with reaching the handle. And I like the seaplane wickets so I never have to worry about getting tangled in the harness when it's time to get out, and my float flying days are behind me.
By the way, re: Skywagons. I had Hooker make me diagonal shoulder harnesses for the second row seats, also with seaplane wickets. My interior made access to the factory attach point easy. Most owners don't know they have rear harness attach points. There are attach points for the third row as well but I gave that seat away a long time ago.