Philip Torrone over at MAKE: Blog pointed us to a detailed set of instructions on how to make a golf club POV (persistence of vision, or a device that spells out words when swung) that writes "NICE SWINGING!" if you've got that coveted golf arc down. According to Zedomax, if you spend the time and money to build this POV, it should cost about $45 and ought to take about two hours to construct. Of course, a $45 gadget won't replace your $50/hr golf coach, but it may just make you the coolest (and dorkiest) player on the back nine. (Bonus points to the first person that makes one of these that spells out Engadget, or the "e" logo).