There really isnt much to it. All I have is a 2x6 on the "O" ring and a 70 pound sandbag on top. I have a 2 wheeler that I wheel it out on. There are 3 marks on the "slide scale" (the elevation bar). One is for true south, one is for lowest west which is 139 and a 3rd is for 121.
The advantage of being in Minnesota is from 87W to 103W the elevation is almost the same (87 is at 38 elevation, 93 is at 38.4 and 103 is at 37.6) so all I have to do is drop the dish and pull it along the arc to see 91, 95, 97, 99, 101. I have to lower it a smidge for 87,89 and 103. 107 for CBC is minimal too. If I want to see 118-125 or so I work off that middle marking I made
137 and 139 I have the 2nd dish (the one that use to be on the deck on top of the table) and its pretty much fixed for those. The slide arm is really rusted so if I want to raise it up I need to WD40 the heck out of it