Supervision for the expressed purpose of making sure there is no snoopingdone.
To your roommate: "Don't let my parents into my room without your snoopervision. I didn't get a chance to hide my diary very well, so an un-snooper-vised visit could be disastrous"
Snoopervising includes breaking into personal email; searching computer use history; reviewing phone logs, SMS and MMS; checking car mileage in relation to stated travel plans; and other investigative actions.
Sneakingly supervising a project. Involves spying and other sleuth techniques because you don't have direct supervision powers but want the job donewell.
Yeah, the cable guy came to set me up and I was snoopervising him the whole time, making sure he didn't eat my cheetos all day.
A person who is not a supervisor or management of any kind who snoops in an effort to gain information, to go back and tell the real supervisor in an effort to be promoted.
"Jacob came back from his break 20 minutes late." Lisa tells her manager.
Even fairly-small children can easily learn how to use simple beach-toy implements to build a sandcastle, so there should be little need for adult scoopervision once they get da hang of it.
In Arthur Ransome's "Swallows and Amazons" book, all of da children were experienced boat-operators, but since Roger Walker was only seven, he might have still needed at least some sloopervision from his older siblings or one of da Blackett sisters, especially if da weather on da lake was a bit blustery.