I think Winni has reasonable access with several free launches (that just happen to be on the far side of the lake and require and extra 10-15 miles of driving) and plenty of ramps open to the public for a fee.
Pleasant has a "ramp" just no "dock". for a lake it's size, it's probably enough.
Sunapee on the other hand is a mess. The Sunapee Harbor ramp is a zoo in the summer and if you are alone, its a very uncomfortable place to launch. I've had people walk over my trailer tongue while I was backing up. Leaving my boat with HDS and rods on deck at the docks while I drive away for 10 minute to leave me trailer at the school is not something I care to repeat. I haven't done the State Park but here it is OK if you have a small boat which i do but that doesn't help the many guys with 20 footers. The ramp at the top of the lake is just a "donation to the Sunapee PD".
I agree that the state should put ZERO dollars into any water body that doesn't have free and reasonably accessible public access. That includes stocking and ramp repair/improvement projects. I recall reading that any lake over like 20 acres is the property of the state and that the state provides public access to these waters. What a crock. PS: Big Island pond falls under this list as well as Deering Resevoir...no free public access with adequent parking, no stocked fish or ramp funding PERIOD!