No single optic works well in all terrain. You are going to have to accept some shortcomings so figure out what you want to achieve and go from there.
Rangefinder: Most overlooked optic by hunters. Use it more for the close stuff. Seriously.
8x/10x: Easy to handhold for longer looks. Well suited for close in work. Sucks at identifying game at distance even on a tripod.
12x: Epitome of a compromise. May be able to handhold for longer looks. Meh or sucks for close in work. Functional to lacking at identifying game at distance even on a tripod.
14x/15x/18s: Harder to handhold for longer looks. Suck at close in work. Well suited for identifying game at distance.
Spotting scopes - Potentially well suited for confirmation. Small percentage of hunters can effectively glass with them; the rest are fishermen at heart.d
Easy to stabilize larger binoculars with a trekking pole, hat brim for support, squat and use knees for support, etc. Different methods for different durations.
Practice getting optics setup for glassing. You can have your pack off, weapon put in a safe spot, glassing stool out and ready to sit on, tripod unpacked with legs extended, optic of choice pulled out and attached to tripod head, and eyes in the glass all under 60 seconds. Do it in reverse to get faster at going after game. Easy to practice at home.
