Skitching
Single action to grip a moving vehicle using Acrobatics or Athletics (DC = vehicle's AC). Success lets you remain adjacent as the vehicle moves and board without an additional chec...
While you're unable to accelerate as quickly as most vehicles, you can keep up with them by hanging onto them. Attempt an Acrobatics or Athletics check with a DC equal to the vehicle's AC. On a success, you hang onto that vehicle and remain adjacent to the vehicle as it moves, and you can Board the vehicle without an additional check. You can let go of the vehicle at any point without spending an action; if you do, you gain a circumstance bonus to your land Speed equal to the vehicle's Speed until the end of your next turn. Each time you move farther than your land Speed without this bonus, you must succeed at a Fortitude saving throw or lose control and move in a straight line up to your land Speed.