Have you ever thought of using a walking staff that quickly converts to a bi-pod. This is my latest version of Varmint Alís ďBi-Fur PodĒ. I put a bit more thought into this one and it has turned out to be my best to date. I use it often for coyotes which requires a lot of moving and quick set-ups, as it is more like running and gunning, and it works well.
Deployed as a bi-pod
Folded hiking position
Threaded foot inerts
Open full length staff
Upper hand loop
Swivel mount studs for sling carry
Straps double to carry longer rod mounts for Foxpro and Mojo when shooting in tall grass
Bi-pods attached to the rifle forend on a dedicated mount has its place, but I for one feel they completely destroy the handling characteristics of a good hunting rifle. If I need to prone out to execute an accurate shot long range, I prefer to shoot over my pack.