I have often wondered how others mark length on their anchor rodes. I know the length of my chain (30feet) so I have applied one band of service on the nylon at the 30 foot point and 2 bands at the 60 foot point and three at 90. Then I applied 2 bands spaced about 3 inches, the next was 1 band a space and 2 bands, etc. In this way I can know by feel how much line I have out when I anchor.