The Log Cabin
You probably won't see anyone out on the water. They're gonna be up their preparing for hunting. Geese, deer, other game. Some hardcore outdoor enthusiasts might be in a canoe. They may not even be hunting. That's not me though. Going up to the lake is a summer activity in my book.
Paddling out into the water in the canoe
You'd need to have a place at the lake to camp out up there. If you got a nice RV, you can find a public campground to set up shop. If you have a buddy with a lake place, you can stay in your own vehicle or camper, so you don't disturb people in the cabin, and maintain a level of privacy as well.
Chilling inside the RV
Another great fall lake activity involves sitting out by the fire and cooking out. Maybe some hot dogs or chicken drumsticks. And you definitely can't do without s'mores. Why sit out by the fire at night on a cold October night without graham crackers, marshmallows, and chocolate. Totally worth getting chilled to the bone.
Cooking outside over an open fire
If it's too cold for you outside, then you can just sit by fire in the living room. Snuggle up to your S.O. and just watch the logs burn. You can fall asleep on the floor and stay toasty warm all night.
Sitting by the fireplace
My Lego people don't have to worry about some of this stuff, because they live in a more moderate climate that's a little less continental than the Midwest. I'm thinking a little bit more like California. I dunno, I'm not a meterologist or anything like that. My Lego city is a fantasy world. Duh...
Sets used: 5766, 60057