revo,
Not to worry! I've been launching and retriving bass and jon boats by myself for years. I'll describe how I do it and you can modify the process to suit yourself.
When I pull into the launch parking lot, I stop somwhere out of the way of other boaters (NOT BLOCKING THE RAMP) and prepare the boat for the water. I put in the drain plug if needed, undo any tie downs and straps. I tie the end of my long bow rope to the trailer winch post, and coil the line on the front deck where it will pay out smoothily without snagging anything. I raise the motor and remove the transom saver, connect the gas line (if needed) and prime the motor. I make sure the key is in the ignition of the boat. I pull into position to take my turn at the ramp. When my time comes, I back my trailer into the water till my boat floats off the trailer. At that point I set the truck brake, jump out of the truck, grab my bow rope and untie it from the winch. I pull my boat to shore or the courtesy dock with the rope and tie it off. I get back into my truck and park it in the lot in an approporate place. All my gear is in the boat of course, so I walk back down to the boat, start up and motor away. When I come back in, I tie off my boat at the courtesty dock or shoreline, clear of the ramp. I walk up to my truck and get in line for the ramp. When my time comes, I back down into the water deep enough to drive my boat onto the trailer. I get out of the truck and drive my boat onto the trailer. I then step out of the boat onto the trailer tongue, attach my winch strap and crank the boat up into trailering position (Be sure your motor is raised high enough to clear the ramp) I get back into the truck and pull CLEAR of the launch ramp into the parking lot. I then make my boat ready to travel, (Tie downs, transom savers, stow gear, covers, drain plugs, whatever) At that point I'm ready to travel.
The most importat thing for the newbie is to do everything he can BEFORE he gets on the ramp to launch or retreive his boat. If you have trouble backing your trailer, hook it up and go to a vacant parking lot and pratice untill you can do it with ease. The crowded ramp on a weekend is not the place to learn! Make a checklist of things to do for launch and retreiveal of your boat, and use it if you have to. No one at the ramp will even know you're a newbie!!! Good luck, and good fishing!
Savage