Yep! Those cylinders are much more vulnerable to damage than a bucket.Seen too many rusted shafts... pitted and ruined .. I leave them down and curled... all shafts are covered. dirty pitted shafts also ruin the end seals quicker and shorten the life of cyls and make them leak sooner. Lots of special cyls are non obtainium on parts and seals.... So ruin a $1000 cyl or a $300 bucket...And dont even get into backhoe cyls...
buckets are just metal... I paint them every couple of years with a cheap spray can of black paint.