I have been looking for a way to mount my handheld where it's easily seem. My boat is a tiller with no console and I really did not want the added clutter or weight of a console or 12v system. What I ended up with is a 1'' Ram ball with 1/4-20 male threaded post and a brass threaded insert. I drilled a 3/8 inch hole in the side of a Yeti and then used a razor to give the hole a small bevel to help the epoxy bond the insert to the plastic. I used Six-10 which was probably overkill but I had a tube of it laying around already.