Parks

Parks cover a vast part of Lake Champlain's shoreline.
There are 12 state parks on Vermont's side of the lake.  There are only 2 state parks on New York state's side as there just isn't room for more since the Adirondack Park covers the majority (75 miles) of the lake's shoreline.
We visited several of the parks.  Most can be reached by car but some, such as Butler Island, are only accessible by water.  At these you may arrive on your own boat or by way of the park ferry.  At the dock camping equipment is loaded onto trailers or carts to get it to your campsite.  Many of the sites were equipped with lean-tos.
We went in search of Lake Champlain's longest beach and found all 3/4 of a mile of it at Alburgh Dunes State Park. 

Lake Champlain may boast of a vast amount of natural beauty but sadly great sand beaches are in short supply.  (perhaps we've just been spoiled by living near Lake Huron)