You can't relay a count to a gorilla. A gorilla doesn't know how to count and might not even know Basic Strategy. You have to signal every move.
Without being insensitive to your relatives here Monk, I think it's big hassle to signal a gorilla for every play, DD, splits, stand/hit etc. You are wasting a lot of energy as well as the possibility of excessive signal interceptions. The ideal situation would be to teach him CABC adjusted to the count at point of entry/exit. Therefore he will be making the correct play for the count he is up against and only needs an exit signal at that point.