Sorry double-posting but didn't want to use praise for last sling to lead into talking about my own; figured that'd be bad manners.
Anyway had an idea for my last sling to 1. make it a single string terminating knot like my beach-sling 2. make it able to double as a dog-leash by putting a loop towards the end.
Was thinking, as slinging is not tradition here in Sweden, that maybe I could make sling-leashes (terminating with BOTH a cracker and a carabiner on a loop) to sell to maybe offset some cost of material it has taken to learn this stuff. I left ONE full paracord in this, to be the cracker, for that reason (this one cracks WAY higher than just the empty cord and, since my old used sling is full cord all the way, actually sounds so much louder that I don't like it; even with an underhand throw it hurt my ears on the dry-runs

).
On a second thought COULD leave two separate strings or leave the down-string even shorter and just do a granny-knot around the carabiner + melt (unsure about a carabiner whipping around attached to the cracker).
Failed x3 with this one because 1. For the FIRST time, ironically, got the release-knot bang on balanced thinking I'd make the down-string shorter (so maybe that's the secret) so just left it as is 2. I don't have a spare carabiner so actually never even tried to tuck a string back into the knot 3. Probably better to do the adjustable fingerloops and padding if one is to use it for a dog-leash as well (don't own a dog but I figure it might be annoying to hold onto after a while otherwise).
So a question... Despite a granny knot maybe working is there a good termination knot that ends with a loop (OR a loop and an extra string; that'd be ideal)? I was thinking of doing the normal turk's as and then tucking one string back into it before tightening (and maybe also melting the others closer to the knot), as written above, but might not hold up well (?) and maybe there are better options? Hope the question is clear.
Picture of the "failed" (never really tried in the end) sling/leash. What I have left on this sling is just cut the middle string connecting the pouch to size and, I'm thinking, do a cobra knot over each of the loops separately with a smaller diameter paracord just received (so it can be double AND single without issue) OR make it another thicker single. Pouch-transition best so far; minimal string used and didn't even need to pull/adjust before burning; stiff/holds shape really well too.