When my baby is transverse I can feel the hard back across the top of my belly, a hard round thing on one side and empty space underneath the body. My baby faces down while transverse so all the movements are directed at my cervix, hands and feet. I also find the heartbeat in the top center of my belly. So it's totally different than what nicole experiences but it sounds like her baby lies right across the middle facing outward.
When my baby is head down (usually LOA) I feel a hard thing on one top side with a hard body extending down from it. The feet push out on the opposite side and there are fluttery hands and a rolling head right on my bladder/cervix area. I find the heartbeat on the lower left side.
When my baby is facing forward it is impossible to makes sense of anything. There are nubs everywhere, movement is crazy and the heartbeat is sometimes impossible to hear.
When my baby went breech there were huge blows to the bladder from the feet and it freaking sucked and I didn't like it at all lol. The heartbeat was found above my belly button on the front.
Those are the positions my baby seems to be rotating between and I still don't feel the position changes at all. After being transverse all day I noticed while walking down the steps a little while ago that my belly looked narrower. Sure enough the baby had gone back to head down and I hadn't felt a thing.