I'm 6'1" and "practicing" the zipperline on moderate pitched bumps so I find the shorties really help with that. In terms of steeps, I guess I could see how a bit shorter poles would force you to stay more forward in order to make contact but would like to hear more opinions as there seems to be differing views.
Agree a set of shorter poles does make zipper line moderate pitch bumps quite enjoyable. Love the bumps at MJ. Had the pleasure skiing with
@Freaq in the spring of 2016. Loads of fun. OTOH, the bumps that form on the steeps are generally big and ugly. I remember Freaq asking me about that at Taos couple seasons back. I believe Freaq also talked about learning a different pole plant for the big ugly steep bumps during his ski week.
My comments about shorter poles are mostly directed toward in bound resort skiing. We are not out there to audition for the next Warren Miller flick. Just some simple slipping and sliding down the hill. IIRC, I may have done a hand full of hop/pedal turns in recent memory. Oh, say the last 8 years or so. Not one of my go to moves. Too physically demanding. I am way too old for that.
Speaking of soft skiing in the steep, I learn most of my steep and bump skiing at Taos. The altitude just won't allow me to get physical. We are taught to be soft and smooth at all time. Each turn has a beginning and a end. That affects the way we do our pole plant also. I don't reach down hill (much) with the pole. The pole plant is more immediately adjacent to the ski boot. The purpose of pole plant is to stabilize the upper body and the ski can go up and out. There is a bit of leaning down and in the upper body but that is it - forward down the hill in a sense. There is no big reach down the fall line.
I have posted this pic before of Andrew at the exit of Rock Chute on Upper Silver Fox at Snowbird. He is at the end of the second turn after clearing the choke. It's still pretty steep and bumpy there as most who skied with me at the gathering can attest to. Just cool, calm and ready to be collected - No drama, no big reach down hill. Just finish the turn smoothly, control the speed, stabilize the upper body with a pole plant and wait for the skis to go up and out.