I am by no means a hill expert. I still get left behind but I am better than I was a year ago. I used to down shift and spin but by doing that I never saw any improvment. So I started trying to go up the hill in one gear higher for as long as I could. As someone said, you don't want to damage your knees. But you need to tax your muscles if you want them to get stronger.
My strength has gone up, now if I could just get the weight part down of the strength-to-weight ratio then I might have a chance...
As we must account for every idle word, so must we account for every idle silence." ~Benjamin Franklin