RE: logbook?
Well i have been using a flight log for the last 7 years, i record weather, cloud cover, temps,wind speed, flight time, along with all the things Ken mentioned. An old habit from 29years od full scale flying? Maybe. But i can see at a glance how my skills have improved over time as well as having a full inventory of all my modelling equipment. It only takes 5 minutes of time at the computer before i open up RcUniverse Forums. No hassle.
Bill