Can you let us know your barrel length and stock configuration? Looking at your signature you may be talking about your P308 20", but don't want to assume.
I have a Magpul single point attachment for my POF P415. I have a POF P308, but that is 20" and even at 6'1" with that type of attachment it would almost drag the ground. I use a Quick cuff sling for my P308 and am very happy