I use, wood sticks by, Hunters Specialties for Sitting shots ( on Hillsides ) to, 400 Yards ( Elk & some Deer, ARE in mostly, ROUGH / STEEP, country ! ).
I put my Pack on my Chest to, support the Rifles "Toe" area and press upwards with Knee, to keep tight and STEADY against, the Toe !
I can hit our 11 inch Dia. Steel Plates, EVERY time using, this method at, 350 - 400 yds !
For Prone at, longer Distances, I shoot over my, EXO Pack ( stuffed Firmly with, Lunch, Napping Pad, Kill Kit, and Extra Clothes ) and I'm using, a home made, tightly wound, ( light weight ) Foam,.. Toe, Rest ! I carry, my Rifles ON the Pack with, a Kifaru, "Gun Bearer" ( this Combo, WORKS ! )
NO more, Bi-Pod for me, on Huntin' Trips,.. Now used, just for, shooting small Varmints, off my BENCH !
And with, the EXO 5500 ci Pack, I can carry, a Quarter of, the Elk,.. BACK, to Camp !