Tsuki as defending technique

Ok.. I don't mean when the opponent launches his attack, you should just do a tsuki and poke his brain out along with his adam's apple. The situation which I'm talking about is, when the opponent's seme is strong and one feels threatened. I realised that when this happens, I could extend my arms slightly towards the opponent's tsuki-tare. This action simultaneously protects the kote (since I twist my wrists inwards slightly) and the men (since I have the centre). Now, the subtle point is that, if I stretch my arms fully it would leave no further possibility for me to attack. So the best is to send kensen towards the tsuki-tare before the arms are fully stretched, and see what the opponent's reaction is. If he attacks my kote, then a kote-suriage-men is easy and fast, because the initial preparation is already done. One just need to twist the wrists slightly counter-clockwise, to wade off the attack. But even without this, most of the time it lands on tuba anyways. If the opponent decides to go for men, then debana-kote can be done quickly, again because I have prepared for this action already by putting my kensen closer to him.