[Mr. V]

I don't understand the part about they were checking the ice to see if it is safe, using a truck festooned with a heavy snow plow to do so.

What, didn't they think the truck would fall through if the ice were unsafe?

I guess I'm wondering why they didn't test it differently, i.e.more safely?

The way they did it seems strictly pass / fail, but then I know nothing of winter sports activities, let alone local practice on the big lake.

R.I.P.