Hi,I just bought a used 170 and have a couple of questions. I appreciate any help! First of all, how does one get more tension on the luff of the main? I am accustomed to boats with a cunningham for this. I am having a hard time maintaining enough tension on the halyard while I cleat it.Also, what is the best way to buff out marks and scratches from the hull/deck? I have some marks in the cockpit from not properly securing the shrouds while trailering the boat (oops) and also some scratches on the hull.I think I am going to enjoy this boat once I get it tuned. Thanks again for any advice.Best regards,Jason H.