Originally Posted by burnthesheep

For the left only, it works, just plan to be consistent. The actual number might be "off" versus reality, but if you always use the same thing the same way it will be fine.

I ditched the left-only because I needed a more accurate dual sided number for time trial data crunching.

It takes time. People doing incredible things on bikes probably spent a LONG time doing average to mediocre things and then another LONG time doing pretty solid things. Some of the stuff we see is from people who have ridden 20+ hours a week for 15 years of their lives.