this is what i recommend using, and what i am going to use for my submersible, thanks neil i was aware the arktos was like that but i wasnt about the subs, so now i will do mine even though i did a fingernail test on pulling them i think maybe if they get alot of sun they will fall out like u mentioned, but read about this metalset , its good stuff, it hardens like steel and when u sand it, it feels like steel, hope this helps u guys btw this stuff is not tha expensive, a little more than regular epoxy