Hello eandiver,
I live in VT and dive in Champlain. Where in VT are you visiting? Champlain stretches along a good stretch of the boarder between NY and VT. The majority of the lake has relatively poor vis 10-15 feet. However the northern larger part of the lake is somewhat better. There are some wrecks, dating back to revolutionary war. There are a lot of zebra muscles, and most everything in the lake is completly encased by them. There are a couple of shops in Burlington, Waterfront Divers, and Victory Sports.
Some other spots you may want to dive:
Lake George, Lake George in in NY but very close to VT. Vis averages 20-40ft and in my opinion far better diving. There is a state park with campsites where you can easily do some shore diving. Just off shore is a small sunken boat and a station wagon. Lots of fish. Boat charters aqre available too. There are some small wrecks from a range of time periods.
Sunset Lake (VT). Close to Champlain. Very small lake, however in the center of the lake there is a shallow (what we refer to as "fresh water reef") are that is a breeding ground. The closest thing to the Caribbean that we have here. Vis is usually 30-40 feet. Turtles, catfish, trout bass and some very large pike. My favorite local dive.
I am a PADI Master SCUBA Diver Trainer. I have a boat and provide charters in the area. More often, I am leading shore dive excursions. The sunset lake spot offers shore dives as well as the "reef" I mentioned. We access the reef via kayaks. There is a LDC close by in Rutland, VT-"Bottom Time SCUBA. There used to be 2, but "Morin's Dive Center" recently went out of business.
Feel free to email me for more info, or if you would like a guide.
o2scuba@aquatic1.com
Hope this helps,
Andrew