Subject: Re: Have Bear Catchers worked post-discovery?
there's a heavy price to pay for this 50% batting average. As a result of all the whipsaws....

Doesn't that essentially mean that the only worthwhile mechanical strategy with the goal to keep you out of bear markets would be one that does not even tries to identify "normal" bears but only catastrophic ones (Dotcom Bubble, GFC), keeping you fully invested at all other times? By trying to identify the characteristics only those extremes might have in common?