Full stun in hunter Deterrence as paladin

I found out that you can counter a hunter detterence as paladin it's a very easy and a nice way to get a full stun when he detterence so he can't disengage away, So basicly what you gotta do is when he detterence you use Blinding light and then after blinding light you can just stun him into the detterence and he will be stunned for the full duration.