Hi. A bit dated reference. I did a float rating with Terry in Jun 2016. A great instructor. The Super Cub, 4413Z was fine. A great area to get back country training. I did an extra 2 hours of water work on various lakes and water the area, in addition to the rating.
Hope this helps.
Made this to get mine off this past week. Worked great. I needed the elevated bunk to get over the wheel fenders and added a slight angle to help the launch.