Does anybody have a method for anchoring a boat out past the low tide line, but still retrievable from shore without a dingy? As an example of what I mean, let's say you want to spend some time on shore or even camp out overnight, but the tide is going out. What do you do? If you leave the boat tied up on shore, when you come back, it will be high and dry, or at least beat up on the rocks. There has got to be a good way to do this, but I was hoping that someone else had done it so I don't have to re-invent the wheel.
With small rafts and skiffs in light weather, I have used a weight tied about 20 feet down the bow line. Then I push the boat out and when it drifts far enough out, I yank the weight off the bow and tie the line to a tree. When I come back, I can drag the weight back to shore with the line. This works, but it doesn't hold well, and I end up dragging 100 pounds of seaweed up with it.
I have also seen an elastic anchor line that you could anchor out, then stretch it to shore, and then with another line tied to shore, let the boat rebound. When you are ready to go, just stretch the boat back in to shore. I really didn't like that method, since if you can pull the boat to shore, a good breeze could do the same. Also if the anchor got stuck, getting it out with an elastic anchor line could be problematic.
A pulley system might be an option. Use something like a clothes line double pulley system to reel the boat out and back. I'm sure something like this has been done before. I am interested to hear what other people have been doing to solve this problem.