Nuts,
1. Excellent municipal multiple launch ramps-car/trailer parking in Penn Yan. Take Route 14A to to 54A- go south one block, turn east on Keuka St- go to the end of the street, turn right on Water St and there you are.
2. Keuka Lake St. Park-- launch ramps and car/trailer parking. Take Route 54A to park entrance on east side of lake, just before Branchport.
Good luck,
Chas