Bouncing *up*. you may not need a true stepping feeling. I never do that unless its on some behemoth (usually a WB) that is so laterally stuck its like riding a board. Otherwise, like BP, its in my seat. Specifically, the BACK of my hips/very low lower back. Little movement, keeping the seatbones connected and still. In all honesty I think what it really does is brings my attention to the back of my body instead of the front, where it is (human weakness LOL) used to being. Shhh, but I suspect this is the concept/feeling the ODGs were talking about when they said "ride the rear end, not the front". Surely they did not mean the interpretTion widely seen, of "make the horse push more than he can carry"?!
Definitely starting to get a better feel for the stair stepping-maybe we are or maybe we are not on the right track. But I have been experimenting with just relaxing my seat/leg (more of a wrapping around mr. round body with a supple/connected seat/leg and a weight resting in the stirrups). The more I can 'go with him" the more thrust/swing/airtime we can achieve. And I can feel the shifting of his belly from side to side--which is cool!
I have one in particular that goes sooooo much better in the bareback pad (I ain't puttin' my 'parts' on that shark fin wither he's got...) He's a wiggly beast and bareback sits me so much stiller on him. I have a treeless also but the the bb pad is still a huge fix over the treeless.