contrary to popular belief you probably should not leave your kobold to float around gently in a body of water for bathing purposes
instead try to rotate them inside the body of water to ensure all parts of the kobold are washed
kobolds eat, like, metal ores and stuff, right? you wouldn't think a kobold would float. what's the density of a typical kobold? ~Chara
That's the secret! If you're dense enough you can simply forget you're supposed to be sinking :>