"To sling, or not to sling"......is probably the subject for a much lengthier discussion and a new thread for sure. Since one of the two primary reasons I used to use slings on my one-piece stocked rifles (properly positioned and tensioned they aid in stabilizing field positions) is pretty well not available on all my two-piece stocked single shots, a sling simply becomes a carrying strap. In this case I'm considering a carrying strap because I've run out of hands to haul my stuff in the field. The rifle in question is a takedown low wall, and I acquired a second front end a couple of years ago with a rotted out bore that is now relined in 17Mach2. Hauling it around in the field while chasing ground squirrels here in central Oregon, along with my shooting sticks and a buttpad or shooting stool, leaves me at least one hand short, it seems, or thinking about borrowing a shopping cart from my local Safeway. I'm normally not much of a fan of slings either, but sometimes you just have to think inside the box and, admittedly, the "thong string" sling or carrying strap was probably the "hot" ticket for field carry a hundred plus years ago. Another alternative I might try is suggested by Mal - a shotgun sling that just uses two adjustable leather loop attached to the strap. One loop around the grip and the other around the barrel or forend.
Bill