I couldn't find an angle to ghost the upper woods so I returned to do a classic side by side... among other things.
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I feel the answer is "make stronger chains". Considering how catastrophic chain-snappage is I would think a few extra grams would be an acceptable price to pay to stop it ever happening.
@nug12182: Racers only use lowest gear out the gate, that is where they snap them, so may be just tell riders not too try so hard too get up to speed, but since most DH riders only use 7 or less gears could easily use 8 speed chains but use 10 speed chain with 7 gears