Everyone who's got one knows how good they are.
If you have a 1800 Valkyrie (and probably a Tourer/STD 1500) they install
via a "mounting bar" that you fix into the passenger seat, under the cover
and foam.
I'm using my Utopia again now that I have the Russell seat, and I want to
run my 1800 solo... so I've found three fabricators (Randy doesn't know
he's one of them yet

), I'm going to see if one of them can build me a rear
fender rack that also is the mounting point for my Utopia.
The attachment point on my imaginary rack needs to be exactly
like the attachment point on a real Utopia "mounting bar", so
I contacted Bob at Utopia to see about buying one that I can
supply to whoever the fabricator turns out to be.
Bob is going to make me a mounting bar and send it to me.
For Free.
Utopia/Bob is a good place to do business

...
-Mike "and, as I said, everyone who has a Utopia backrest knows how good they are"