Jon, cool, that's what I thought, so I do just some ring PU every once in a while when "greasing the grove".
On the other hand a larger diameter bar is a new idea, definitely am going to set up as soon as I go to Home Depot today. I don't have a suitable tree :-) but otherwise my setup is just like yours. Where are you at? I only have pines... BTW, it is definitely harder to PU on a swinging bar, but that's all I can have w/o building an outdoor special stand - too much time and $$$.
Thank you so much!