I didn't see a topic for anchoring/mooring techniques or even sailing techniques, so this question winds up here. My IP26 (keel, no cbd) lives on a mooring in a fairly crowded harbor. It tends to sail at the mooring, much more than other boats nearby. It is attached to the mooring with a single line from one of the bow chocks, not from the anchor roller near the tip of the bowsprit. This line goes down at about a 45 degree angle to the mooring float. A ~4 sq.ft. riding sail rigged on one of the backstays made no difference. A riding sail vendor recommends an 18 sq ft sail but this seems excessive windage for cases when the boat is left with no one on board in case a storm arrives. Others have recommended running the mooring line through the anchor roller or using a longer mooring line. Those suggestions might work but the proximity of other boats makes them undesirable. A bridle from both chocks might also work, but a swivel would have to be installed at the mooring float to prevent the two sides of the bridle from twisting together as the boat swings with the tide. Any other ideas? Any one know for sure if the bridle idea with swivel would work?