There is no website but the manager has a phone 604 209 0298. His name is Paul Montoya. There is a cement ramp that is best to launch on semi-high tides for bigger vessels. You can launch on low tides for 16-17 ft boats but you will be backing on to the beach past the ramp. I've done it lots as I have a 16 ft aluminum. Dock space is limited due to regulars mooring their boats. There is over night and weekend camping spots available with most campers paying for 6 month term. Best to call ahead. Fishers hit the wall above Chatham Point, Green Sea Bay, Noodle Channel along Sonora Island, and Hall Point. Can't tell you fishing has been lately, but heard a report of a 31 lb by a guy that took a 30 lb last year.
Logging road into Rock Bay is 30 minutes north of Campbell River and it is marked as Rock Bay road, Paul has a large sign with Rock Bay Campground on it. Turn off is on right- hand side of highway right before Amor De Comos River bridge. About 30 to 40 minutes on logging road to campground depending on road conditions...no hills.
No fuel available there, but Blind Channel Resort can fix you up for diesel/gas about 20 minute boat ride away.
Good Luck