At some point you could be considered an accomplice. Many states confiscate anything and everything associated with a hunting infraction, truck, trailer, tack, guns …..everything.
That is often the way we handled it. Charge everyone in the truck or camp with possession of illegally taken game. Let it get sorted out in court or before court by lawyers and prosecutors. If you leave out a possible guilty party they are liable to use the empty chair defense. As in the possible culprit that didn't get charged.