I stumbled on this link to the Roger Gracie Brazilian Jui Jitsu Academy, and found that Kru Jonny - who has been training my little boy since last August, and me since April - teaches Muay Thai there as well as at Jackapong. The Muay Thai/Gracie Jui Jitsu juxtaposition is interesting, because from what I have read it seems that Muay Thai on your feet and Gracie Jui Jitsu on the floor is - with a certain amount of simplification - the combination of styles that is proving the most effective in Mixed Martial Arts.
Now that I know what I'm doing, Kru Jonny often asks me to come into the gym when he has the kids practicing techniques in circuits and I hold a Thai pad for them to throw a punch, kick, elbow or knee at. The crisp thwack that cracks the air when a blow is delivered correctly is quite different from the muffled sound that a beginner's effort landing produces, and I find it quite rewarding to be there when one of youngsters suddenly gets the hang of it.
My little one and some of the others are going to do a display at a Thai community charity fund raising event next week. I feel proud of that as it means that Jonny must be confident enough of their skill and language (they count off and name forms in Thai) not to be afraid that they might embarrass him.