I finally got Arch rocks after 6 months of hard work. I remember when 3x12 nearly killed me. I use to hate them, but strange as it sounds I don't anymore. At times I thought it would take a life time to master these. I don't ever want to lose them so I thought I would do 1x60 at the end of my SL workout.
I would be interested to hear from those that have mastered the arch rocks and what they do to keep them.