Several manufacturers make light weight compact spotting scopes for hiking. Even if you get one of these, get a heavy full-sized tripod. Otherwise, the wind and you touching it, will make it too shaky to use. Of course the big tripod is more cumbersome to carry than the scope so it sort of defeats the purpose of buying a small scope. If you're going to burden yourself with carrying a spotting scope at all, it might as well be a big one.
This really is the challenge in a nutshell. Clarity, power and stability come at a cost in $$$ and weight. I have a pair of Canon 10x30 stabilized binos and think the stabilization is a better mousetrap; but twilight capacity is limited, they're heavy, and the better quality stabilized binos are $$$$$. The process of selecting a hunting spotting scope is a giant balancing act of "good enough". What I'd really like are something like
http://www.eurooptic.com/docter-optic-20-50x80-ed-binoculars.aspx mounted on a solid tripod. Of course, you'd probably need an armored personnel carrier to move the thing.
At the end of the day, we make our best guess and see what happens. Unfortunately, there's no substitute for experience, and experience usually comes from mistaken choices.
Edit: I should have posted the link to this one. It illustrates the problem more effectively.
http://www.eurooptic.com/docter-optic-20-50x80-ed-variable-binoculars-with-backpack-case.aspx