Suicide lead, based on the fact that Aerodactyl is the fastest Stealth Rock and Taunt combo in OU. Taunt if you think your opponent themselves will try to abuse non-attack moves, and then use SR. The odds are pretty good you'd be KO'd by this time if your opponent predicts you and hits you through the Taunt, but if not, then use either a Super Effective move for the most damage or Rock Slide for the viable flinch chance. Stone Edge is another option for more damage potential, but loses accuracy and no flinch.