My current solution is using a Rick Young neoprene bino cover to protect my optics in transit, and a $2 DIY Rick Young harness (shockcord + ITW SurMount Dual CordLoc). The neoprene cover is a bit noisy for bowhunting whitetails, so I ditch it once settled in my tree.
ITW SurMount Dual CordLoc Black
ITW SurMount Dual CL Black Cord hole size is 5.6mm x 10mmwww.hudson4supplies.com
If you think that’s loud don’t try anything else!