If the wind and waves are too big, you may have trouble getting it to turn all the way into the wind. I've sometimes had some luck trying to get the boat to spin the other direction (I know, it's weird) by sinking the stern instead of the bow or by first submerging the bow until the bows are into the wind and then moving quickly to sink the sterns to complete the spin.

Last option; carry a small drag chute to tie to the bridle and drop in the water with a 10 foot line. This should hold the bow into the wind. You can right the boat with only the bows pointing into the wind if you can keep them there and let the sail fly like a wing. I've never tried this but we've talked about the option on here for a while.