lol, we have so many vehicles out on the bays every year. every 3-4 years one of them goes through. usually the ice is good and thick enough that it's never a problem, but it's in cases like these, where someone takes a really heavy vehicle out, or maybe it's someone new/unfamiliar to the area. i gambled once when i was an idiot kid, made it just fine, and that's enough for me.