So the cushcraft is a stack of four three element arrays? How do they come up with 20 elements? I must be missing something in the old manual I found online. I was going to build two ten element yagis with horizontal elements on the same boom as vertical elements (but offset 1/4 wave) so the phasing lines are equal in length (I'm being weird about losses I know). I plan to stack both antennas in he horizontal plane. I figure if I'm careful I'll get 12.5dbi plus 2.3dbi from stacking. With both polarities lit I end up somewhere back in the 12dbi range. I don't think this will net circular polarization so I haven't considered the need for switching left/right. My understanding is that this array would produce eliptical polarization, and with all the hills/valleys in the Carolina's, I should have better results. Worse case scenario is I get the performance if a ten element beam. 35-40 ft height is all I can get. The lay of the land makes talk towers a waste of time. I'm on a bit if a hill, but there are a lot if taller places around. The fellow I spoke with at 67 miles is behind a peak that's almost 1000 ft higher than either of us. To get line if site there would require much steel.