Have done preflights on all my planes over the last 30 years. just exactlly as we do in full size.
Also have logs books and I can tell you every thing about all my 13 A/C. all maintenance ,battery times,battery life and hours that are flown
My last entry shows over 600 hours. on glow and quite a few on e power.
It is very handy having a good record of history.