This might help. I don’t know personally and can’t find anything specific to on froze waterbodies.
“It's the Law
Ride on approved trails only
Keep wheels out of streams, rivers, and lakes
Wheeled or tracked vehicles are not allowed on beds or shores of watercourses, wetlands or waterbodies
Driving in these areas produces harmful ruts and erosion problems. In addition, fine sediments stirred up by tires are harmful to fish. See:
Know B4 U Go: ATV's and Water Don't Mix
Keep Wheels Out of Water– Aug 2016 (1 page, 21.0 MB)
Take garbage with you - leave nothing behind
Prevent start of a wildfire - keep your machine free of debris
Limit your stay to 14 days
Be sure your OHV is compliant. The unit must:
Be registered
Be insured
Have a licence plate
Have a head-light and tail-light
Have an approved muffler.
http://aep.alberta.ca/recreation-pub...motorized.aspx
When something falls into a grey area where there isn’t any specific written law on the matter, I’m sure it would ultimately fall to the discretion of a judge. And if your standing before one of them, you might regret the act that got you there.
I’m sure the day will come where nothing motorized will be allowed on the ice. Yet hopefully by then we can use our drones to fly us out, lol.
As to unloading, if driving on the ice was a concern, you could technically unload right where the land meets the ice. You’d probably be blocking access, but you wouldn’t be ticketable.