I just wanted to add a comment on the Dutchman Boom Brake here. The effectiveness of a boom brake is certainly all about the setup. I called the manufacturer, and they are very knowledgeable and provide excellent advice for making the system work well. They discussed positioning on the boom further aft to improve leverage (as mentioned above), positioning of the deck attachments forward enough to ensure proper line tensioning as the boom swings, and strength of the line stoppers used aft. They seem to be an excellent company.