From what I have read, taking insurance when large bets are out is recommended due to high proportion of tens and faces.
It is extremely important that it ranks the number one on any strategy deviation charts.
I pulled it out twice as well recently (and both successful) on my large bets.

However, I think it is very easy as well for the casino to catch because no matter what you have, what system you use, you always take insurance on large bets and never on small bets.
If any supervisor takes a little time to observe it is almost certainty to get caught (I have not been caught yet).
My last one was not based on a good hand (soft 13), contradicting the ploppies' belief of insuring good hands (such as a pair of ladies).

What is the camouflage strategy against this side bet? I know I need to practise more on cover plays.