I am now using DirecTV Slimline J-poles and struts for my motorized dishes. Best, most sturdy mount I've ever used! Best of all, they are VERY easy to level.
Tron, did you have that flat roof mount made? Just curious to see if that could lay right on top of aluminum carport that is used for mobile homes.
Is there any reason you couldn't use a 10' section of real pipe?
Wouldn't have to make much of a hole for it
Should be a quick job for a post hole digger.
Two feet deep should be sufficient, as long as you put a big anti-spin cross-post down there.
Then, attach the upper end to near the top of the mobile home for stability.
Pole should extend two or three feet above the (flat?) roof, to allow clearance for the dish/motor.
Would be easy, reliable, cheap, cosmetically okay (no worse than a TV antenna mast).