For kids a bipod or tripod is good because they don't have the strength for normal holds. But you have to carry those shooting aids for them.
For high altitude hunting, say at 12,000 ft. where the O2 seem to be 1/2 what it is at sea level, light weight is a necessity. A bipod adds weight, period. Your pack is your shooting rest. Your hiking poles are your shooting sticks. Learn to use them.
BTW, for those who don't use hiking poles for mountain hunting I recommend a good pair of adjustable carbon fiber poles. They help you utilize your upper body for climbing and absolutely save your knees on descents. Proper use of the pole straps is essential. GOOGLE cross country ski pole strap use for illustrations. Pole straps are for pushing against, not just to keep the poles from dropping.
*If you hunt with hiking poles you need a way to carry your rifle securely to keep your hands free. I recommend the Kifaru Gun Bearer. But carrying your rifle on your pack is the other alternative, either strapped on or in a sleeve a la Eberlestock.
Eric B.