By FRNash/PHX, AZ (Frnash) on Wednesday, July 15, 2020 - 10:29 pm:
jbuck (Jbuck):
"Just keep finding this statement: The Copper Harbor Light is on mainland state-park property, but there is no public access"
That is my understanding as well, the The Copper Harbor Light and immediately surrounding land is State Property, but there is no public access by road.
If you can contact whomever is/was doing the lighthouse tours, they would probably have more accurate info, and may be able to help with access by boat.