Marine deputies cannot back a boat trailer

Dad had the boat in a slip in Mission Bay San Diego, we were living in the desert at the time. We have our hands full of stuff heading down to the boat, he stops me on the bridge to the docks "Let's watch this". F250 Crew Cab, bigass cabover camper, behind it a 27-30' cabin cruiser. Man and woman were at the trailer hitch area, man disconnecting tie down to the boat. "Look, they're deaf. They're signing." Man climbs up into the boat, woman climbs into the pickup. From the bridge of the boat man signs something to the woman. Truck starts, reverse lights come on, revs come up and she hauls *** in reverse to the water :eek:.Just as the transom hits the water man has the boat fired up, woman slams on the brakes just as the rear bumper hits the water, boat slides away cleanly, man parks it at the unloading dock, woman heads for parking lot. Whole thing didn't take but 60 seconds, not a word spoken. All my trips to the launch ramps I never saw another launch that efficient :lol:.