oh yeah i am planning on using usals.
I'm going to take pictures of the entire process, since i have some unique restrictions.
I live in a mobile home so my roof is metal. I can't use a stud-finder on the roof because it thinks the whole roof is a stud! I live in colorado so we get a lot of moisture in the form of snow and rain, so I don't want to poke any holes.
I went to Lowes yesterday and bought a round piece of wood 2 feet in diameter. I also bought some heavy duty roofing adhesive. The plan is to bolt the base of the mounting arm for the dish into the circular piece of wood, and to glue that down to the roof with the heavy duty adhesive.
The wood is not rated for exterior use so I plan on sealing it first. Finally after everything is situated on the roof i'll install the motor on the arm, the dish on the motor, and then run the cables down. I'm relatively lucky that 105 is my true south bird, it will be hard to mistake that one with another.
I'll be surfing for feeds in no time!