Using angled scopes in hides

My wife and I are recent recruits to birding, so we're still on the steep part of the learning curve.  Over the past 18 months we've acquired a small spotting scope and I recently upgraded our tripod capability with a view to making it easier to use the scope while in a hide.  Trouble is, most hides seem to make scant provision for the use of a scope.  Our current setup for the scope consists of:

Vortex Razor HD 11x-33x scope, angled eyepiece

Velbon SUB-65 tripod with "fluid" pan/tilt head, integral monopod and hide clamp.

The problem is that most hides are designed for watchers sitting on a bench and viewing with binoculars, so the shelf is set at a suitable height for resting elbows and the window slots are set at a commensurate height.  Mounting a scope with the hide clamp on the shelf places the angled eyepiece at such a height as to oblige the user to stand in order to look down into the eyepiece.  If the scope is mounted lower, it is looking into the wall below the window slot.  My wife has a slight disability, so standing for long periods is painful.

I am currently researching further purchases to enable the scope to be mounted sideways, thus placing the eyepiece at the same height as the objective lens.  This particular scope doesn't have a clamp ring that can be loosened to make this change, so we either have to modify the tripod head/QR plate, or replace the scope.  But anyway, the resulting arrangement will always be a bit of a cludge, requiring the user to point their head in a direction at about 45 degrees away from the target.  Since the vast majority of scopes on offer have angled eyepieces for all sorts of good reasons, it doesn't seem reasonable to say "just buy a second scope with a straight eyepiece".   

It seems to me that a better solution than any of the above would be to arrange some viewing positions in hides so that the viewer can easily look down into an angled scope from a seated position while the scope is still able to see through a window.  This would require either a higher bench to sit on, or a lower window slot, or both.  Has anyone ever articulated this requirement before?  If there is some point I'm missing, please explain!