Why use a stock plug that is prone to failure. All my kayak connections are done with Astro Flite plugs. I have used them on a friends PWC, (he races for a living) so they see alot of time on the water both salt and fresh. have yet to have one go out or corrode. a little dielectric grease and press them together. They are a little pricy but in the long run worth it. Hope it helps.
ast527_1.jpg