There's a reason they're called "beach cats": the best way is to launch them from a beach.

>We are going to a lake I have never sailed on before, and Im not exaclty sure what the launch is like.<
Always checkout a launching area and ramp before using it. See if there is room to step the mast in the launching area without it hitting overhead wires, trees, etc.

>Do I try to find a place to beach in advance to he can hop on there?<
If you're afraid of getting wet, you bought the wrong kind of boat. On a multihull you WILL get wet.

I get the feeling here that your friend may be wearing black, lace-up street shoes, too. Your toesies are going to get wet. Your legs and arms and most everything in between will eventually get wet during the day's sailing. Staying dry is a bit of a challenge but if you want to stay dry you should have a boat that was built with only one hull. Try removing one of the hulls and see if that helps you to stay dry.

>So what happens if we get there, and there is just a boat ramp and nothing else.<
First, you should raise the mast before putting the boat in the water. Check that the boat is strapped down firmly onto the trailer before stepping the mast. Step the mast on the hard where you won't be in anyone's way but don't raise the sails. Sails will be raised after you launch the boat. Why? Because sails make the boat move and you don't want a moving/sailing boat while backing it into the water. It's a distraction. Make sure that the route from the setup place to the launch does not have anything on the way that the mast may hit. Look up and check the route that the top of the mast will be taking to the ramp.

Watch for small children and gawkers before using the ramp. Dogs will move out of the way. It is permissible to back over stray cats...twice. Keep the boat strapped firmly onto the trailer while backing down the launch. Make sure that the launch ramp isn't so short that your trailer wheels drop off the back end of the ramp. Also, don't let your trailer wheels drop off the sides of the ramp. Make sure that you have room on both sides of the hulls to back the wide cat down the ramp. Don't let your vehicle's tires make contact with slippery algae or other growth on the ramp. You don't want vehicle, boat, and trailer sliding down the ramp into the water unless you drive an SUV which look like big marshmallows and, like a marshmallow, may actually float.

Back down the ramp to the point where you think you can shove the boat off the trailer into the water with a gentle drop off the trailer. Get out of your vehicle and unstrap the boat and shove it off the trailer. Don't scrape your bows on the trailer as the boat slides off. At this point, you may be surprised to discover that your are wet up to your waist. Be patient. During the day the top of your body will eventually be wet enough match the soggy parts below your waist.

Have someone hold the boat and ask them to move the boat to a safe place while you go back to park your car/truck. Notice that they, too, are getting wet up to their waist. Check your calendar to see if they may be in some discomfort as a result of holding the boat in waist deep water.

As you slide behind the steering wheel to move your trailer and vehicle to a parking space you may notice a funny smell in the car. It's you. It mimics the smell of the water around the ramp. The water now soaking your seat will eventually dry, maybe. The smell will go away when you buy a new boat.

After the boat is off the trailer and floating, push it to a place where it will not drift away. Point the bows into the wind and secure the boat so that the bows stay pointed into the wind. Raise the sails.

>Do I bring a third person?<
Sure, if he's buying the beer. Rule No.2: It also helps to take someone wearing a bikini.

>Do I just hope there is a Dock nearby that I can sail up to?<
No. You hope that there is a beach to push onto where some old codger will wander over and pepper you with inumerable inane questions about your boat. Upon spotting the old codger ambling your way, it is time to raise the sails. You can raise sails on a boat while at the dock if the dock is pointed into the wind. If it isn't, then you're going to have to build a new dock pointing into the wind.

>Do i back the boat up to the water dump it off with him on the boat, pull the ramp out and swim out to meet him?!<
When the boat has all the pieces in the places where the manufacturer intended, it is time to sail the boat. Look up at your windvane to see which way the wind is blowing. You will discover that you forgot to put the windvane on the mast before you stepped it. Place passenger on boat. Keep a close eye on passengers in full makeup. Shove the boat in some direction into the wind and try to jump onto the boat before it sails out from under you. If you miss the boat and it sails away from you, your only hope of saving the day is hoping that your passenger left the beer at the dock/beach.

You will know when the sailing season has ended by monitoring your passenger's condition. At the end of the season the passenger may seem to be vibrating. This is known as "shivering" as in "shiver me timbers". That's pirate talk and it means it's time to build a fire on the boat. The fire will provide some momentary comfort. Pry wood from the dock to use for the fire or, better yet, set the dock on fire and invite your friends to the party.