Keep in mind, when you see a telephone line loaded with dove, it's not the telephone line itself that's attracting the dove, it's normally the field below it loaded with food, and the gravel on the road, etc..
It's dove decoys that will attract the dove. Simply putting up a telephone line will not attract dove. Put decoys on the line, now you are cooking with bacon. But why do a line with decoys way high in the air? Why not bring them in close? Way up high, dove are more likely to land there to roost, hungry dove (what you see in the morning/afternoon), they want to land on the ground and eat. What you want to simulate is dove feeding on the ground.
This is what I'm rolling with on the opener. Picked it up at academy....
I'm going to put one mojo on it in the middle, 2 clip on deeks on each side, and deeks right below it on the ground like they are feeding.
The dove better watch out for me!