[quote=rpiper138]Unless your head is under an icebreaker you aren't likely to go through. That ice is probably a couple of feet thick.
I did some iceboating in my youth and it is quite a rush. The biggest dangers are cracks and pressure ridges especially in overcast conditions (when it warms up above 20 below). The cracks generally just break stuff and can cause you to capsize (which isn't as painful as you would think).
Pressure ridges are a different story. They can literally kill you. If you hit them from the high side you can drop anywhere from 2 to 10 feet. Hitting them from the lowside is like driving a cardboard box into a concrete wall at 60 mph.
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