Hi Listers, I, too need to clean up my swing keel on my 1976 M17 this summer. If memory serves, I think the older boards weigh in at 160 lbs. Larry my friend, seeing we have sister ships (even the same color), perhaps at a weak moment you can share with me some of your "speed tuning" tricks! Are you using bottom paint? Later, Bones ____________________________________________________________ Small Business Tools Compete with the big boys. Click here to find products to benefit your business. http://thirdpartyoffers.juno.com/TGL2141/c?cp=zrdhZx4xAzWDYi7ug_ro7QAAJ1ApMe...