Hi Ken-I'm not real sure about this, but if the local authorities actually think you're hauling FISH, you may very well have to have a mandatory (and ugly) sign made by the state that says "FISH ON BOARD" or something like it, for emergency personnel information. At least that was the case down in Seabrook, TX, where I used to live and on the streets of Houston, proper. I don't know if that's a local thing, or statewide. You might want to check into that with your local Health Dept. first.
It's just possible you might want to pick another "logo" to use! Just my .02 P.S. I can also do hand-painted signs on vehicles. Mike Selvey Nacogdoches, TX '79 Westy "SFE"