Thanks everyone, I installed one fender board tonight that was built like SD's diagrams. I tied it off to the toe rail with the fenders behind it on the hull. I ended up using a 2x6 that I cut to 5' it's going to work out great for my slip. I'll store it on deck if I can, or in the aft berth with the rest of the sails and such.
Right now, it kind of looks out of place, it needs the weathering so it looks more at home on the boat.
Next project....... outboard motor mount on the aft rail for the dinghy motor.