So how do you think that works for an ad hoc system of handling larger enemies?<br/><br/>Touch + Grapple to get a handhold. PC considered grappling (with all the penalties) but the monster is not.<br/>Climb to move to a stable platform. Success means the PC is considered mounted on the monster, but unable to control it. Failure means the PC remains grappling.<br/>From this position, the monster can't hit the PC. Monster can spend a standard action shaking off the PC, provoking a ride check. Failure means they go back to grappling. (DC based on what, HD?)<br/>Flexible or humanoid monsters might have the ability to hit the PC still. Particularly large monsters may not even know where the PC is.<br/>The PC might be able to deliver automatic critical hits if they make more climb checks to the right spot. (move action, needs 1+1 climb check per size above large.)<br/><br/>Don't ask why I'm figuring this out... ::)