Well here's the thing. Hayate is all single hit stuns. Look at his combos. 6pk knocksdown, 9pp knocks down, 4p string mixups all knockdown, h3pp will launch in stun (both hits), and that's it. What does that leave you with for stun strings? 6pp, 3pp, or your pp strings (pp, ppp, pp6p, pp2k)...