Push harder or on a different fore/aft section of the board if using variable radius. Tip board higher or lower on edge.
Yes, along with early turn initiation. You can't have your cake and eat it too. You can either have speed control or not be slowww. Gotta pick one. Given that steep slopes are indeed steeper I would expect there to be more gravitational force to deal with. Conservation of energy and all.
Same technique just more force and speed. For me at least. I try to get on the nose earlier so the board has less time to point straight down and pick up speed.