Been There, Done That!!!
This doesn't help after you get stuck, but release the bungee on the centerboard and the line on the rudder downhaul when ever you think that you may get in trouble. Now for the real question...You are now stuck. After you have looked around to ensure that no one has seen what you have done...and trust me, this only happens when everybody you know is watching, check out what the wind and waves are doing. You are going to go sideways to the wind, and if it is strong, ignore everything below, furl your jib and drop your main to keep from getting blown over. Also, remember that you are probably aground on the centerboard, not the rudder. RELEASE THE RUDDER NOW!!! If you don't, you will forget and as soon as you are free fron the centerboard, you will become aground on the rudder and you are once again STUCK! Now let's assume that the wind is acceptable and we are going to do this the cool way. Furl your jib. This should help your boat to round up into the wind, or at least help from blowing your bow leeward. Sheet in your main. This also will help you to move the bow windward. Move your weight as windward as possible. This also will help to round your bow into the wind. We want to round up to take the pressure off the board and rudder. If none of this works, the wind is no longer your buddy. Before I would drop my main, I would take me paddle and try to force my bow windward enough to release the tension from both parts. This is the part where you no longer look cool! If none of this works, you probably have to drop your main and do what it takes to release the tension. I think that you want to keep the main up as long as possible so that when you do come from aground, you have the ability to control the craft and move away from danger. My opinion only! What you are trying to do is to simply get the bow turned around from the direction in which you run aground. Jump in and push the boat around, cut the bungee, do what it takes if none of this works. Boat balance and weight in the boat is also an option to manipulate. I have had luck being able to use the paddle method as a last resort, but I never had to deal with waves of any size. Now that you have released the tension, you will need to point the boat the other way to knick up the board. Unfurl the jib and the bow should catch the wind and pull it leeward. The board may kick up, but with no speed, you will probably have to pull it up manually. The ruddder will kick up on its own. This has worked for me. Other people may have other suggestions. Hope this helps. I know you asked about an easy release, but I have not worked on one ...yet. The procedure as stated above is probably the gymnastics that you have worked through, but its all that I know of.
