I went thru an awkward BW time right at 3 mos, I was a pouch only girl and I bought 2 MTs and that was not the answer. It was a particularly awkward MT phase, IMHO.
We wore pouches comfortable thru 4 mos in a sitting up cradle, and I have a relatively large baby. We never really did kangaroo. I would just put the seam of the pouch on with the seam way over toward the side of your body (the one with the shoulder wearing the pouch) Then line up the baby's butt with the seam and there is plenty of room for his legs to spread across your body inside the pouch and his head can be pretty much all the way out with him sitting straight up.
I switched to an RS when pouches got too small to put a baby all the way inside. They are much easier to do a hip carry and in my Oopa I can make a pouch big enough to put my 6 month old all the way in like he used to sit in the pouch.
Meg
Shop At Home Mom to
Nicholas (10/12/00)
Lexi (5/3/02)
my sweet baby Luke (8/1/05)