Rocks and shells on the beach . Something on feet is a must. I use scuba wetsuit boots/socks. 40 years old - surprised they haven't ripped. Real rubber on the soles. Good traction on the board. They are tight and a bugger to get on though I haven't pulled a muscle yet . I wonder if dish detergent on my heel would make it easier . Yes it does ! . New Sailworks Flyer 5.2 with 2 cams. Difficult to pop.
Dish detergent on the mast /cam ..... so much easier to rotate.

This works well on masts/cams, but if your Flyer doesn't rotate smoothly you may want to look at the Cam shims, which may not be set right, or at whether the mast is too stiff.

www.mclubemarine.com/sailkote/