Do you do it on the 6 inch?
I was able to do it pretty much ok on the 6 inch, the 2nd time ..but the first time i tried on the 8 and :eek:HOLY COW...(has never been attempted anymore on the 8)
You have to be rested to be able to it. No DOMS, no heavy HIITS..
I usually do it during my STS...