Anybody keep track of body work / panel replacement hours?

Ive been doing bodywork for 20 years. These old cars when you do stuff its a guess on time when you bid them. You use personal experience and your skill to gauge it. On my 2nd duster i can tell you i had 3 days in removing and installing both quarters trunk extensions and rear body panel. That is welded in and seam sealed ready to prime. As a beginner id say triple the time. If someone asked me to do it as a job i would bid it around 32 to 35hrs. But it all boils down to skill and the willingness to learn. Tbh id rather teach someone the skills than have them spend $$$ on it at a shop. Plus there is a sense of pride that comes with it
I'm not a beginner but have mostly done structural work like floors. 3 days for quarters and trunk extensions is pretty good. I am guessing I will be double that.