First post here. It may have some errors.
I was looking for a SUP board stand and found this one out. It doesn't aim for boards or kayak but for Panel/windows in Auto workshops. But I find it could be used for boards or kayak as well.
PS: I got 11 foot 30 inch wide and 12.6 foot 28 wide hard SUP boards. They stand on it stable. also the foam protects any scratch when you turn boards around.
Cheers
Great for waxing snowboards on, mines come in handy of the last 10 or so years I've owned it