Push Off [one-action]
Source Player Core pg. 411
Requirements You have at least one hand or leg (or suitable appendage) free, and you're untethered.
You use as leverage an object or creature of the same size as you or larger to change the direction you're floating in. Float up to half your Speed in your chosen direction. The distance you move at the end of your turn while untethered changes to the amount you moved during this action.
You can Push Off as a free action immediately after you make a successful melee Strike or successfully Shove. You have at least one hand or leg (or suitable appendage) free, and you're untethered.
You can Push Off as a free action immediately after you make a successful melee Strike or successfully Shove. You have at least one hand or leg (or suitable appendage) free, and you're untethered.