Interesting that it works for you.
I find that the straight head-height walls of my observatory are no good for preventing wind hitting the scope, in fact I wonder if they're worse. I find that the wind ripples over the top of the walls resulting in quite a lot of turbulent wind within the open half of the shed.
I suspect for me the actual result is probably no different to not having walls, because either way the scope gets shaken around, but to someone standing inside the observatory it's obvious that the wind is swirling around in a turbulent way rather than just blowing through.
A dome pointed away from the direction of the wind would be nice
one of the reasons that in my observatory's current location I would prefer a dome to a shed.
I have often considered what a good aerodynamic design would be for an open roof/roll-off-roof shed would be to prevent wind disturbance, where the wind is directed overhead without touching the scope.