I completely understand and agree with you
I have been working on a combination of using a dog carrier seat and a pvc pipe frame over it:
this is the carrier:
http://www.petego.com/products.aspx?catId=25&prodId=225
and then a pvc pipe from over the top of it
the base of the carrier fits almost perfectly on the passenger seat - I just had a new Ultimate Seat installed on my bike and today we did the install of the Utopia backrest and it looks like if I put the carrier base on the passenger seat and then install the backrest, the backrest peg will go thru the metal frame around the carrier base (I know, this is a long explanation)...
well, I am going to test this theory tomorrow and will come back either with pictures, or with a large black and blue on y forehead........