Sounds exciting to see that much game. And it never fails, when you want a camera the most, you left it at home...
Woodchuck do have a slight bush to their tail as I remember them. As for a marmot, I thought they were one and the same. Maybe a slight sub species as I have heard both names used. We have woodchuck (a.k.a. groundhog) in Wisconsin but unless they are on your property, they are protected from hunting as I understand it. I knew an old man that used to tell me they were good to eat.