There isn't that much installation to do and there are vblogs available showing how to do it.
You need a screwdriver, I use a 3/8 cordless drill. A tube of Dicor sealant. And away you go. I removed a Wingard sat tv dome that we do not use and installed the TOGO dome in the same spot. The attachments don't line up so I had to put new screws down. The old dome has a 12V power line so that eliminated that for me, but people just run the 12V line down the fridge vent.
I put a blob if dicor at each spot I was going to put a screw, Put the dome down in the dicor and self drilled the screws (provided with the TOGO) down into the roof, with the cordless drill and a screwdriver bit. Once the screws are in I put a blog of dicor ontop of each screw to double seal it. The dome should be in the center of the rv roof and a foot or two from any other things installed on the roof. The 12 connections on the dome face toward the back of the rv. Then connect the 12V and you are mostly done.
Here are a number of
VBlogs. I think I read that one fellow had the local car stereo people do the installation so keep that in mind if you really don't want to do it. Probably a mobile RV Tech would be happy to do it also. It took me less than an hour, half of which was removing the old dome and cleaning the roof that was under that dome.