Class 4 scramble with the aid of a rebar ladder. No pro needed.
Go to the West face of Bath Rock (the opposite side of the large parking lot) and go to the center of the formation. Walk up the slabs to the point of least resistance. Continue to climb up the rebar ladder on easy holds and then scramble the remaining bit to the top. Great views are had on an easy route. This can also be used for the down climb for all of the other routes on Bath Rock.