when fishing from the basement or crawl space drive and counter set a 16 penny finish nail to Mark your plate, don't forget to allow for any molding.
Get some long route/cable marking flags if wiring a double wide or crawl space. Tie all your cables on the wire so you only have to go under the building once.
Use pulleys on long pulls and around corners.
My last one for now, watch your language on that difficult fish, a customer may be listening. Boy I could write a book on this one.
