I don't think elevation matters a lot to dishy. I see pictures of backyard mounts on the ground and pictures of mounts on roofs. What might (or might not) make a difference is angular jitter if an elevated mount causes Dishy to sway in the wind. Elon has told us that there is a phased array inside the dish and this is a very, very fast means of beam steering. But, if the beam is pointed at the moving satellite and there is suddenly violent shaking due to wind I don't even know if the dish has the sensors to make the correction. Side-to-side motion will not hurt much, but small changes in angle, projected over a few hundred miles, can cause the beam to completely miss the satellite. So, I would try it elevated, but with the pole stabilized by guy wires, and see what happens. The worst case is that you have to change the mount. Mine is "mounted" using the tripod that came with the dish on an outdoor dining table on a second floor balcony, with a sack of concrete as an inexpensive weight. Works well.