So I was at good ol' Wally World tonight and picked up 40' of 1/4" polypro dock line. It has 100# working load. My thoughts were to make a whoopie type ridgeline out of it. Question is has it been done before and how long of a bury will it take to work properly? I know it will grip itself because I have already made a small loop in the end just to experiment a little.

Thanks,
Brian