Yes I have only seen the one's with baffles, and thought they's be much better being used as a water slide into the pool.
My main concern with these chutes are that although they control your speed, you are still going to hit any rocks in the water quite hard, and as with Concordia the very cold water seems to have been a factor in at least one lost soul, so again they wouldn't help in many places.
I think I am right in saying that anybody who made it onto the deck & remained there survived didn't they?
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