I suspect the likely outcomes are (in order of likelihood):
- the guard whistled at you and did nothing more
- the guard reported your plate and you get a letter cautioning you not to do it again
- they launch an investigation into who was driving and you don't tell them and that's it
My money would be on the first option
Former Ontario Police Officer. Advice will become less relevant as the time goes by !
+++ This is not legal advice, only my opinion +++