Hi, I'm not an expert or anything, but it might be difficult for you to tie your stretchy wrap tight enough around your baby on your back. I have a woven wrap and even then I have a hard enough time getting it tight enough so dd feels secure. Have you tried a woven one for back carries? Once I get dd nice and tight on my back, I rarely have to adjust or retie, but with a stretchy wrap I've heard you need to adjust often, esp. if they fall asleep. Have you tried posting on thebabywearer.com? There's a lot more traffic over there and so many cool back-babywearing mammas that I'm sure you could find something that would work for you at a good price.
Good luck!
Good luck!
