I've launched from a busy boat ramp (steep, too) several times in Marco Island. As previous posters said, get everything ready to go (except sails hoisted. Have them ready on the trampoline hooked up to the halyard) before you maneuver to drop it down the ramp.

I use beach wheels and roll the boat down on those. Then, all I have to do is run the wheels back to the trailer (parked), hoist the sails and I'm gone. The crew holds the boat on the dock while I'm running the wheels back.

On the way in, I usually had to sit and wait my turn in line. I'd hold on to another dock until I have a shot at sailing in. Then, drop sails, grab the wheels and pull the boat up and out of the way.

If the boat ramp is in a small area, bring a paddle to get your boat to the ramp in an orderly fashion.