Just get moving, water will be sucked out. Does require someone jumping in to put the plug in after it drains.
Don't ask how I know this.
Well, I know it because I drowned in New York Harbor off of Staten Island. I drowned because the boat owner didn't tell us about replacing the plug nor about the seat cushions being life preservers. I drowned because I stayed in the cold water long enough to save my wife and my dog - on my shoulders climbing a ladder on the back of a fairly large boat manned by people in a wild panic.
Obviously I was recovered and revived. That explains why I am as ornery as I am! :^) The only boat I am interested in is an ice cream sunday boat.