Learn how to apply and use the Harken Blockheads Tuning Decal on your Opti to create repeatable settings. Featuring John Pearce, US Sailing Youth Director. ‣‣‣ ABOUT HARKEN BLOCKHEADS What exactly is a Blockhead? If you are totally obsessed with how to rig and sail your boat, you might already be one! The Harken Blockheads website is filled with hundreds of tips and videos to help you sail better. The club is free and you get free stuff right away -- Join Blockheads at https://harkenblockheads.com/join.php We will mail you a (free) Harken Blockheads Tuning Decal in your (free) Membership Kit when you join the (free) Harken Blockheads club. No cost. Ever. Harken wants to equip the next generation of sailors with the knowledge that rigging and maintaining your boat better will lead to sailing it better and winning more.