[TowerTalk] Hardware for a Rotating Tubular Tower to Accommodate a Inverted V Dipole Question

[Dennis Vernacchia]

I am sure that some of you have faced this dilemma before and have come up
with some solution.

A ham friend has a 40 ft Tubular Tower which he intends to use with the
rotator mounted at the bottom.
Since the entire tower now rotates, what have you come up with, hardware
wise,
to accommodate  the Inverted V Dipole supended just bellow a yagi on teh
nast that protrudes at the 40 ft level?

 Does anyone have any photos of either available or home made hardware?
( If commercial, which vender ? )

73, Dennis N6KI