So I have one pole mount firmly in the ground, but my dish isn't quite high enough to clear all obstructions even in what is basically the optimal location for my setup. I wish the pole mount was longer. As a way of getting extra length, is it possible to buy a second pole mount, take just the top piece, and attach it to the top of the existing pole mount? Has anybody ever tried this? Will it make a firm, tight connection with the existing pole mount?