Don't you think that being dragged backwards (from above the nipples) might be even better? I'm thinking that when dragged forward there is an up swell of water created by the body through the water, that wants to charge right up your nose.
Backwards might create a low pressure area where you may have a chance to find some breathable air.
Any way you slice it though, draging in the water is far more dangerous that most people can envision.
I suggest that everyone do the trolling game. Hook up a tow line and take turns hauling one another through the water. The towee can signal the tower with a lifted hand, to stall the boat. The tower can watch the towee and stall when things look dangerous. All of this should be done with a life vest on so that the towee can let go at any time and float while recovering from ingested water.
