My personal preference? Light soap and water spray at the dock with drag tight (not torqued down). Air dry like that. Stand them up at home and back off drag almost entirely. Light but covering spray of corrosion X spray. I've heard WD 40 traps water in the reel and the other doesn't? IDK. All I know is they get med use all season without issues. That said I also carry a spare every trip just in case.
