Steep driveway ideas

[Descant]

Many lakeside properties are elevated and have a stairlift/elevator apparatus to get down to the dock level.
The tractor/snowblower set up seems to be preferred. I have a family member who used to plow but the snowblower has better ability to move stacked up snow, or move it so it doesn't build up. Go with a heated cab.

Sounds like, as a random visitor, OP needs not only a tractor snowblower, but somebody local to run it to keep things open when he isn't here. The accumulation of 2-3 storms between visits may be insurmountable. Sounds like storing the car and tractor at the top of the hill is a must in winter until snow removal is accomplished.

Using sand/salt that will wash into the lake is probably a NO-NO.