It does seem hard to get that "sweet spot" of focus at 200 yards.
I have that same issue. It would be really nice if one had a small rubber wheel and cable device to tweak the focus without having to touch the side of the scope. In my head I visualize something like either a cable release used on cameras or a precision stepping motor that would allow easier focusing.
I am sure that someone will come up with some sort of instant focus like you see on digital cameras today.
I am thinking the shorter and more rigid your setup, the easier it is to focus at higher magnification and longer distances.
That is also where some of the really expensive spotting scopes are going to shine.
I have never looked through a Zeiss or Swarovski spotting scope. . .I am afraid what it might cause me to do