Thank you folks for the advice and encouragement.
Juan Foote (love the clever handle btw) - I've found some yoga routines on Youtube and we have a membership at our local Y where I can join free yoga classes... I must find the motivation to start utilizing these tools.
I did fit some toe clips/straps to my bike this weekend. It made for improvements in several ways, but I think the most significant is how it helps to balance the strength/flexibility disparity between my legs. I'd never used any retention prior to this, and am adding it to the list of things I should have been doing 10 years ago.