A while back, before unicycle.com started selling them, George Barnes was
kind enough to send me one of the handle bars he’d made, based on the
original by Chris Reeder. This is a really great product, and since George
was kind enough to send me one of the prototypes, I figure the least I
could do is post a review 
For pictures of the handle, see http://www.public.iastate.edu/~gbarnes/
To mount, just drill a few holes in your seat plate, and bolt it in. I had
a Viscount seat, which I tore apart until nothing but the plate was left.
I attached the handle, and put a roach cover with air cusion on top.
Alternately, you can use a carbon fibor seat plate, or a semcycle seat
plate (nice you can finally buy this without the semcycle cover, from
unicycle.com)
I use the handle on my Coker, and Muni. (Freestyle and trials, I prefer a
Miyata handle.) It makes a huge difference when you’re on a hill – there
is now a great ability to pull the seat up with a great deal of force.
This helps you go up a hill, and also helps you slow yourself down, when
going down.
On the Coker, aside from helping with hills, the handle is just large
enough that I can fit part of both hands on it, and take my weight off the
seat. Though, I don’t think it was designed with the Coker in mind, it’s
much nicer than any other commercial option.
I think that’s about it. It’ll add weight to your uni, of course, but if
you use it, it’ll be worth it.
If you get a handle, I recommend you try not to overuse it. Don’t hold it
for the sake of holding it. I like to think it’s there in case I need it,
but I try not to grab for it until I do.
Good day, Jeff Lutkus
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