The problm with otters is they're very stubborn animals and can get into anything. So, I don't think you can build a hiding structure for the bass without the otters figuring out how to get into it. Then, during the spawn, when the males won't leave the nest, that makes them even more vulnerable. Are otters protected in MO? Is it possible to call the mO DNF and have them removed? I'm sure some other person would love to make a home for those "cute" little buggers. LOL.