This past Saturday(March 18), I tried to lock through from Barkley to the Cumberland River, in a Bass boat, on 3 different occasions. Pulled the chain for 15mins each time. No response or verbal explanation as to why I wasn't given access to the river. No barges were in the locks or approaching from either side during any of my attempts. Anyone know why I wasn't allowed through? Are there only certain times you can lock a pleasure boat through? Have locked through many times before with no problems.