Ditto on what Kraw said. I do everything already mentioned. When I unstrap the stern of the boat I put in the plug and give the primer bulb a couple of squeezes. My "first mate" and crew hold the bow and stern lines. I back the trailer down the ramp stopping when the stern of the boat is above or touching the water a bit. I set my parking brake, get out, unhook the bow safety chain and winch strap. I do not unhook the bow from the trailer before I back down the ramp so the boat does not slide off the trailer on to the concrete! Then I slowly back down the ramp and tap the brakes. The boat slides right off and I head for a sparking spot. My crew ties the boat to the dock and starts the engine... so by the time I get back to the boat she is running and ready to go.