I bought some cheap cut resistant socks off aliexpress. I found out that they were great on a padded deck but not so great on a deck that was gritty, as the little green grip pads on the bottom of the sock started to get worn down and I lost traction. I did a few tests with the kitchen knife, I tried slicing through them and the socks held together, I put the socks on and tried the same thing. I could not bring myself go psycho stabbing myself, so not sure how they would be against sea urchins. At my spot there is a fair amount of oysters and rocks, so far the socks are holding up.
I use them when foiling as I cut my toe on the rear foil and it put me out of the water for a long month. But when I am on regular fins I prefer not to wear them. But if I go from foiling to being on a slapper I do feel kind of naked without them.
Winter is coming up and normally I don't wear booties but I would like to see if these socks will provide me with a little bit more comfort from the wind.
If you are interested in the socks:
www.aliexpress.com/item/1005002836863851.html?spm=a2g0s.9042311.0.0.27424c4dn5qrPM