You can get painter's poles in the hardware store for really cheap. You can get lengths of 10-12 feet. Good enough to clear the crowd.
But they have a funny kind of thread on the end. I think they are 5/8 / 6. Really course threads.
I've thought about getting one to play around with but always am stumped on how to fix my NN3 to the end.
See where I'm going? Nodal Ninja already makes a pole adapter. What about a simple pole adapter with the big course threads that would screw onto the end of the painter's pole with a 1/4 tripod bolt on top?
Probably not a big seller though....