There's a P-15 here at our club in the UK and although it looks a good boat, out on the water it's a DOG! The main looks to be almost uncontrollable - the mast is all over the place bend-wise and the main looks like a bin bag in shape. A couple of us have tried to help the guy with increased downhaul etc. but nothing seems to work......
We've pretty much agreed he needs at least a new sail, a set of spreaders and diamonds or, better yet, another boat. .....