By popular request here is the GoPro mount I made. It was constructed using a 2in x 1/8th in piece of aluminum. At one end it it the full 2in height and is secured to my wind vane with 2 bolts on one side and 1 bolt on the other. I created a second small piece so it sandwiches each side of the neck of the wind vane. I had it extend a few inches back to allow clearance for me expanded battery pack and back door floaty. To secure the gopro I used the straight adapter that came with the expanded battery. I bolted that to the aluminum which fit perfectly between the 2 prong side of the adapter.
