For long-term serious glassing sessions a high-quality pan head makes life much easier. I stepped up to a high-end Manfroto video head for moose hunting this year and believe I have "found it" at last.
With a huge Vortex tripod and big scope the stuff stays put and adjusts in any increment desired extremely smoothly at any speed.
I have seen too many completely lost trying to find something in an angled scope, only to find it instantly with the straight scope to believe that advantage is not real...