Have everything ready to launch except the main (rolled or flaked on the deck, halyard attached) and the jib (furled). Then get on and off the ramp as quickly as possible. You will be sharing the ramps and docks with power boats who have a lot more maneuverability and a lot less stuff to do on the ramp than you. They don't understand that it takes you 5 minutes to hoist the main, attach the outhaul, attach and set the downhaul, adjust mast rotation, stow the halyard, put the daggers in the wells, drop the rudders, and tack out the narrow channel. All they know is that you're in their way. They're not (all) jerks they just don't understand or empathize with sailors. You will be doing YOURSELF a big favor by being ready and getting in and out as fast as possible.
The ox is slow but the earth is patient