Here is what works for me
on my 1986 H28.5 with a 3 yr old main:When I drop the main, I make sure all the folds at the mast are on the starboard side of the mast. It would work as well if they were all on the port side. Then, starting at the aft end of the boom, I pull the sail aft while putting accordion folds in the main over the boom. When I have about two feet of it folded on the boom, I tie that portion off with a sail tie and move forward. Do another 2-ft section and tie it off. I end up using 4 sail ties. When the sail was new and stiff, this was more difficult and it hardly fit under the sail cover. Now it fits fine and only take a few minutes. I was intially concerned about flaking the sail this way would result in permanent creases in the sail where it folded, but that doesn't seem to be a problem with the sail, which is 6.5 oz Dacron. Give this a try. Its a great boat and you should take a look at our website: