I put the plug in first and then remove the back straps and transom saver and tilt my motors up I attach the dock lines to the boat cleats on the side that the pier/dock is on (I usually try for the drivers side of the boat for that) I back the boat in until the stern starts floating and then throw the dock lines on the pier/dock and undo the bow strap. I climb up on the pier/dock and pull the boat off the trailer and tie it off. Go park the truck and remove the electrical connector adapter from the trailer and place it on the driver's seat (can't get stolen there). I like the lines on the boat's driver side because it is easier leave the dock that way. It is also easier to tie up as I drape the stern line over a cleat as I approach the dock.
Recovering the boat I back the trailer in until the bunks are wet and then pull forward until the back of the bunks are about 2-3 inches above the water (best place for MY boat if a steep ramp, less if not so steep). I start the motor and let go the lines. I give myself a little shove away from the pier/dock and when I'm centered on the trailer give it about 1/2 throttle. When the boat stops I put it in neutral and shut it down and tilt the motor up and jump off the bow onto the ramp. Attach the bow strap and pull up far enough to verify the boat is centered on the trailer. Pull the plug and go park the boat and ready it for the road (transom saver, back straps, dock lines and gear stored properly)