Boom Vang Reponse
I have a 1986 Hunter 25 that I bought last year and am also contemplating putting a boom vang on. The boom vang will increase your boats performance by allowing you to control the "twist" of your sail by controlling the tension of the leech of the sail. This is mostly needed when you are sailing "off" of the wind (you don't really need it when you are close-hauled, because then the mainsheet acts to put tension on the leech of your sail). If there is twist in your main sail then the sail can be at different angles of attack on the wind, and can cause part of your sail to be luffing (most likely the upper part), while the lower part is correctly trimmed. Obviously this will translate into a decrease in the sail's lift and, as a result, power. A Boom Vang will help you to control this.... It is a very simple yet effective sail control device... If you care about performance at all, and what sailor doesn't, I would definitely get one....As for what kind, I would just get a simple pulley system. You do not need a solid vang for this boat... You can probably get away with spending about $150 for the vang and ~ $30 for the fitting hardware to fit connection points to your boom and mast, assuming you do the installation work yourself.Hope this helps.-Mike