Wow! Many thanks to all of you who have contributed to this thread. I really do appreciate all of your input and advice, as there have been many excellent points made.
Yes, it's Junior cricket, and I am big on making sure its a friendly, respectful, fun (dare I say traditional?!) environment, but I refuse to let opposition batsmen take advantage of my team, thinking they are above consequences. I'll keep you posted on how it turns out - we may not meet those two teams from now on, but if we do, we will be prepared.
It seems that attitudes to the Mankad haven't changed much over the last 40 years. Quite a few divided opinions, but it was a question well worth asking.
Thanks!