To be honest loving the “ROLL ON” more than regular show, and I’ve listened since first episode in Hawaii, but tapered off. As far as minimalist running, you tried it already ( mentioned in Finding Ultra) but I felt you we not patient en to have an effect. DONT run in five fingers, they limit your toes movement. That was the mistake I did back in 2011. Run in sandals, try; Luna sandals, that’s all I run in on trails, even in your area, Malibu Creek State park. They give the freedom of toe movement. I’m 55 and have been doing this now for about 10 years and will never go back to shoes. I never even herd of that dude you mentioned running barefoot, only because this has been going on for a long time, nothing new, just not payed attention to since maximist shoes started trending. Good luck and be patient.