I've heard all kinds of stories of things you can add to your bottom paint to make it last longer. Things like cayenne, prescription antibiotics, prescription antiparasitics (Ivermectin), depleted uranium, ground up voodoo dolls etc.
I did actually go with the Cayenne theory once and decided to up the voltage and added a bottle of "Dave's Insanity Sauce" split between 2 cans of paint. It did make it 5 years before needing paint again....
Anyone have any evidence for additives scientific or otherwise? My North Korean contact isn't going to be able to get me the weapons-grade plutonium before I haul, so I need to get creative.