MorfArsenal
Unfortunately that's what we do here - de-icing at the gate. A man with a hose sprays fluid from a cradle lift/"cherry picker" attached to a deicing truck. It is not unkown for aircraft to be ready but number 8 in their company's deicing queue. Slots are often difficult to meet or plan for.
Even worse is when de-iced aircraft need to be done again when holdover times are reached or exceed!