It is kind of funny....the only "Cannon Fist" I learn was from "My Jong Lohan" style and it was obvious because of a certain move repeated (i.e. fist upward to the sky)
Your Cannon #1 = Babu lian huan - I personally didn't see it until someone showed a clip of the two man version and I instantly recognize since I do a similar version of it....I think you can see it on my school's video section (part of it that is...)
Your Cannon #2 = Lohan 18 Hand - I personally learned this two man and solo afterwards. In my opinion it was an easier two man set but your solo looks way fancier than mine did...and I kind of forgotten it by now...
......so I finally answer your question I swear I've seen it somewhere on the web before unforunately that was long time ago and I no longer have the link BUT... I swear I saw it in one of the Lee Koon Hung Open Ceremony performances so...commence digging...SUCCESS!!!
http://www.youtube.com/watch?v=991e3tchIxc
you would be the guy starting from the right.
Hope this what you were looking for!