I believe there is a small ramp for cartoppers/kayaks on the main rd.
On Pleasant St. there is an area where its possible to launch a cartopper, but there has always been a sign expressly forbidding the launching of boats from that location. There are also boulders to block the area and make it a little tougher. However, I drove by last Thursday and the sign was gone. I doubt it was officially removed so I imagine it will reappear soon. Regardless I've seen many a person launch small stuff from there. A few weeks back I caught a big boy in the weed-choked eastern reaches of the reservoir (see here
http://www.mafishfinder.com/canton-reservoir-trip-1-7130-trip.html). At that time the sign was still there, but a guy launching a small 2 seater from the back of his pickup asked me if i wanted to join him. I can check back next time I drive by.