If this works for teaching javelin (and I’m sure it does), perhaps there is something here for bowling?
I often see young cricketers struggle with “bowling from base” – they miss the all-important rotation from a basically side-on base to front-on release when there is no inherent forward motion – and the step-by-step approach might help to get them through this.
I’ll have to try this out – perhaps starting from “withdraw & throw”…with a straight arm, of course!