Years ago when I returned to the trails, I said who needs poles! Then I saw super fit athletes go by me at Half Dome and realized I needed them.
Well for years I have used cheap junky ones but now I have a pair of Black Diamond Z Poles from Sole 2 Soul Sports (new local shoe store).
They are super light and strong and fold up into a Z when you don't need them. I plan to go to Frazier Park soon for a test hike!
I will be using them in Mid May for my second Rim to Rim to Rim hike at the Grand Canyon and this summer at Mt Whitney.
I might even use them at an ultra.