mmyersdisc
Double Eagle Member
That's actually a very legal play.
803.03.F. A disc thrown in water shall be deemed to be at rest once it is floating or is moving only
by the action of the water or the wind on the water.
So you could just pick it up whenever it was floating in the water. I'm not sure where you would play it from, I guess in the water. just hope that you don't get stuck on a rock 200' down the stream though. That'd be pretty funny.
normally you would rethrow from where it went out of bounds at....im sure its TD's rule though