Seems to happen to us to a couple times a month during season!! Loosing half day here half day there adds up throughout the week. I definitely don't schedule it. Try and keep enough clients to stay busy for the whole week, if I tried and schedule Saturday and Sunday when would we catch up the rain outs? Sundays has become a maintenance day for tucks and equipment, as much as I try and keep up on it throughout the week something always needs done on Sunday!