Picked up a couple Cannon Downriggers that I intend to mount on the stern. I would like to do it in a way that allows not only the downrigger to be removed, but the mount as well. I was thinking of using Starboard or similar product as a plate and mounting under the rail in the stern corner with stainless carriage bolts ans wing nuts. The problem is that when the unit is removed, I'd still have the bolts and nuts hanging down under the railing. Just wondering if anyone has better method?