Couple old surf leashes you don’t trust anymore or salvage broken ones etc and use the cuffs plus inch wide or so nylon straps (2) and plastic slider/lock thingys like from a knapsack that you can get at sports store for a buck. Voila! Perfect, bombproof fin tethers.
Chippy, if your matting then DuckFeet are the excellent first choice.
You’ll want to move up to UDT’s over time for matting, they are a big fin(UDT’s)
and your legs and feet will get built up to handle them when you get
bored with the Duckfeet.
As a matter, you should by all means stick with either
Duckfeet , UDT’s or fins that are within their power range.
In all reality, the UDT is the best matting fin…but then again it is
really inadvisable to use them as a first timers fin.