Quote from Citrusjuice;1248029:
but I have been canceling somersault kick with smash,windblast and am before :( sometimes I can def/ct during the kick?
Im just gonna assume that it was latency differences or something.
wiki doesn't have a lot of PvP info
He's saying
you can cancel Somersault Kick and Dropkick, but not other fighter skills. If you're looking for a PvP guide, you probably wont find any because the majority of players avoid PvP and the few who does do PvP doesn't do guides because there isn't much of a guide or they don't want their combo/fight style to be made public.
Also to answer your questions instead of telling you that PvP is a waste of time, not everyone uses Wind Blast after a chain 2 skill. Everyone has a different duel style. For instance I don't use guard cylinders in PvP because I don't have good alchemy skills so during a Fighter skill, I can land a Smash by switching weapons quickly.
As for Ninjas, you can establish that Shadow Bind should be banned (it should because of how it's like Frozen Blast/IS). Otherwise you need to keep landing attacks to prevent the Ninja from attacking, or you can Ninja yourself or use Guns/Bows that can fight back a Ninja if used properly.