RIP. Condolences to famliy and everyone involved.
https://www.theweathernetwork.com/en/news/weather/severe/snowmobiler-from-alberta-dies-in-avalanche-near-valemount-british-columbia
Check with the county that you are in and they will let you know what you have to do. In Lac St Anne it has to have a grade (2% I believe) then gravel and then polly on top of that. Also has to be on screw piles. Different countys, different soils = different rules.