Tsuki ikkyo

I'm trying to find my favorite version of tsuki ikkyo, but it's pretty hard to find any versions online. I like Tissier Sensei's a lot -- he's very precise, and his timing is very good. I suspect that timing is ~99% of this technique. O-Sensei talked about leading the opponent in from the very inception of the attack, and I was looking for someone showing that.

I looked and looked, in summer camp and full class videos, for people doing this technique, and I found that there's actually not a lot of tsuki techniques being recorded. I'm not sure if that's because of the timing requirements, or if it's some other reason, or if I'm just missing something.