Per a conversation I had with ODNR regarding this subject, I was informed that you could in fact return from Canadian waters with your legal Canadian limit (50 perch) and that you simply could not stop to fish after you cross the line into Ohio waters. You DO NOT need a valid Ohio fishing license to cross Ohio waters of Lake Erie when traveling to/from Canadian water. I advise you to follow up with ODNR. This is a transporting issue not unlike transporting by car from Canada or surrounding states, into Ohio.