I have the GoPro helmet cam and the more I use it the more things I find I can do with it. I’ve used an extension pole to follow riders but it was only 2 feet long and I wanted more reach. K-tek sells the “Tadpole” for close to $200 but I had an idea to save that money and get more use out of my Gitzo GM2541 monopod. I found you can disassemble it and come up with a comparable pole that has more than a single purpose.
After removing the rubber tip you can take the double ended stud from the head end, add a 3/8 inch flat washer and nut, then screw the tip into the GoPro “tripod” mount attachment or a mini ballhead and the tripod attachment. The collapsed length is ~20″ and the extended length is ~65″. Compact and lightweight carbon fiber it quickly and easily converts back to the monopod configuration when needed.