When I need a roll of visqueen to keep something dry or protected from sun I always make the mistake of being cheap and going for the thinner material. I always regret it as I'm sure these idiots must have when the wind split it apart and........"hey, that's not hay, there's a helicopter under that tarp". The rest of this story has got to be interesting.
It is incredibly easy to install a secret switch that deactivates igniters, or starter relay. The latter is best because if you get no spool, you get no fuel and it is obvious you forgot to flip the hidden switch.