August 30th, 2016, 08:09 AM
Join Date: Feb 2006
Location: Deplorable area of CA
My Turner sling has the holes marked 1 through N, and that way you only have to remember the number of the hole you use for sitting and for prone. If I were marking an otherwise unmarked sling I would make some sort of non-permanent mark next to the holes I use until I was quite sure that's where I want them. If your sling is new or if you are still working on your position the holes you use may change.