You can get into Cayuga Lake, via the canal system. I have a cruising sailboat that I keep on Cayuga Lake, and we see these canal boats from time time to time. There are a few wineries with docks that you can tie up at and go in and get a wine tasting. My favorites for that are Goose Watch, Thirsty Owl, and Sheldrake wineries.
If you do this, you'll go right by my boat, which is moored at the Red Jacket Yacht Club on the west side of the lake about 10 miles down from the north end. Give a toot as you steam by.
-Speak