Like what Miss Lydia said about pinning him down, I did the same thing with my drake whenever he was showing aggression and would try to attack me. Using a stick or broom to warn him off (not hitting him though, of course) is a great way--my drake won't go NEAR the same broom I usually used to use! lol.
Also if you spend time with him and don't show fear, it is possible he can become friendly, or at the least leave you alone. My drake went from mean to super sweet; he lets me pet him and never bites anymore.