When I had a Rubrum in the ground I highly regretted underestimating it's vigour and NOT rubbing out more shoots.
I'd select a leader with one close node and let everything above it be a health sacrifice to allow continued cutting of everything else back to the smallest closely noded shoot.
These periods are crucial to me, where we must delve into the horticulturally minorly unsound in order to really solidify a good design.
I reckon if it can survive a hurricane......
Sorce