I returned to riding a few years ago. Now 60 years-old but in okay shape. Each year I have ridden more and more, a few centuries, etc. I have improved but really slowly. So this year I want to use a coach. probably through Training Peaks. Anyway, I think a power meter will be a helpful tool but am not sure that the extra cost of a dual pedal system vs. single pedal or solo crank is worth it for me. I'm looking to become a stronger rider because I think I will enjoy it more. Any advice? Thanks.