Higher
Turns out you can nose slide low ledges by slappying the board up there. I've seen other's doing that, getting into a nose slide without an Ollie. So, I'm now trying to increase the height of my nose slide slappies. Next stage, after curbs, is that very low ledge.
What I really need to work is commit to that slide, lean on to the nose, and step up on the ledge.