Trouble with the Linden Monofin

[Mermaid Catherine]

I adore my Mermaid Linden Monofin by Bodyglove. It's super comfortable, and has great propulsion. However, I've been having some serious trouble with the straps. In particular, the padding on the straps swivels as I use it, so that the straps themselves slide off my heels as I swim. I can only go one length of the pool before they slip off. Does anybody have any ideas? I've considered just cutting the padding off, and using neoprene socks, but I hesitate to make such a permanent change. Do you guys think I should do it? Has anyone else done this? Does anyone have any other ideas they think I should try first?
Picture of the backwards padding so you can all see what I mean.
https://www.instagram.com/p/B06jTzAn...on_share_sheet