Not that I am necessarily right; but I plant towards the top of the facing bump, not on the back side.
Also, if by "block" you mean a stopping action - then I do block. I use the pole plant as a check, even in the zipper.
For me, I find that standing tall make a big difference. It's part of the mind set that I use to start a line. Again, it works for me, but it may not be right - stand tall and face the fall line, right from the start.
you want to plant the pole on the downhill side of the bump, or even if on the uphill side, it shouldnt be a blocking action
i tried going from blocking to downhill side poling and it improved by bump skills tremendously--it was one of those eureka! moments