I agree, as little talking as I can, not easy for me.All that said, I don't use ANY of the spoken commands for the older dogs very often. I don't use "Here" on the return of the retrieve, unless they become disoriented. I don't say "Heel", but rather just slightly hold my hand out on whatever side I want them on. I rarely have to say "Sit" because they know the game and do so on their own.
Whatever works !
A come in whistle as dog turns with bird.
An arm held out to the side for heel, sometimes with a finger snap.;-) And the word release for the dog to give me the bird.
From day one it is always release, for release.