Any suggestions on a tripod for my spotting scope?

The one I have for my camera just doesn’t lock down well enough to hold the scope still.

Suggestions for the right spotting scope?

I want to purchase a spotting scope for my Dad. He has a backyard where he watches birds, deer, etc. The longest range he would need is around 200 yards. I’d like to get a fairly good one for a reasonable price. Any recommendations on magnification so he’s not disappointed?