nice thing is the backrest is supposed to be easy to remove if you are going for a solo run

 

 

i have a rear corbin seat and backrest for the girl and she likes it a lot. ***** are10x happier but you are correct it will raise your center of gravity because she wont lean on you. keep in mind almost any backrest for a corbin seat will work with your seat i picked one up on ebay for a fraction of the cost. heres the one i have and i think i paid a little less for it but just to give you an idea LINK

 

thank you. I think I may go for something like that...