Six months ago my drop jobs took 4 hours, now they take 90 minutes and I know exactly why
I started keeping a log of every job in a cheap notebook, and the pattern was obvious after 40 installs. My average drop time went from 4 hours down to 90 minutes over six months, and the only real change was that I quit guessing where to drill and started using a $20 tone probe on every wall first. Before that I was cutting 3 or 4 extra holes per job just hunting for the stud bay, plus patching drywall after. Now I mark once, drill once, done. If you are still eyeballing wall cavities in 2024 you are burning half your day for no reason, so what is the one cheap tool that actually cut your job time?