Dynamic tiller

It would be great to get your views on setting dynamic tiller. By that I mean that the limbs should come to zero at the same time as the bow is fired but how can you account for that without a high speed camera? I've but the bow on my compound draw board and measured the tiller at full draw and then as the string returned to zero - in other words simulating the arrow launch. By doing so I changed the tiller on my barebow from zero to positive tiller. The bow shoots pretty good but I'd love...

Dynamic tiller