The stock Prindle one must be very poorly designed. Or at least, not designed to adjust while under sail. It's simple open cheek blocks on the mast and a jam cleat to hold it down. Without pressure, the downhaul can easily pop off the cheek blocks and you have to be right at the mast base to push down and cleat it in. Adjustments under sail would be a p.i.t.a.

Why do I get the feeling that I'm begining to answer my own question? <img src="http://www.catsailor.com/forums/images/graemlins/blush.gif" alt="" />