Mark W
Yep, I really don't really care that much I guess.
Very good points. What about tying off to a safety line while wading? Also, if the current is too strong, maybe a crossing should not be attempted at that spot. I have heard of trucks getting swept away or overturned by the current. I remember reading one account where a guy got stuck in the middle of the river and had to open all his doors to allow the water to flow through, otherwise the current would have knocked his truck over.
Generally a safety line is better waiting downstream to be thrown to you instead of trying to hang onto it while crossing. Tying off to a line can be a very bad thing. It can get tangled and can also actuallky act to pull you down. A line should be held, not tied. If you are a whoite water resuce expert with the right gear this is not an absolute, but for what we are tlking abiut here... I consider it to be so.

As to "if the current is too strong, maybe a crossing should not be attempted at that spot"... ABSOLUTELY.
You have to know what you are doing. You don't want to be pushing the envelope casually. When in doubt... stay dry.

I'm not at all convinced that the stories of opening doors to let the current through are true. Or if it did happen, the folks involved misunderstood the situation. Water passing through the rig will have pretty much the same amount of drag as water passing over and around it.
Either way, it's a situation to be avoided. Knowledge, understanding, experience, planning and CAUTION willusually prevent these things.
Mark...