amtrpt

Thanks for the comment WV. It's a good idea and something that I hadn't thought of. Just make sure that you keep your tounge and throat as relaxed as possible when doing it.

This is a boring answer, but I do the same things for multiple tounging that I do for single. The only difference is that I do a lot more work away from the trumpet. I'm trying to get my tounge muscle used to a quick even articulation. for me the valve coordination comes second.
Andrew