I was going to use 16ft poles too, but decided on just 12ft ones. 2 of those feet are in the ground with concrete and then I cut some 2x4s in half and used those as the vertical ones and they go up all 12 feet.
That does look like more than 12 ft. Luckily I dont have any immediate neighbors. And the one closest to me loves some beer. I ordered 6 rhizomes. Im putting 2 in each mound so I think I am going to go with the tent pole set up. This is my first attempt at growing hops. Maybe if it works out well I will put more in next season. Thanks for the input. I will getting that 16 footer this afternoon. Cheers