The Sternum Checker is an obstacle that causes fear (and injuries) for many. Peter Dobos proposes the obstacle should no longer be used in any course.
There are many safer alternatives that offer similar physical challenges such as the Irish Table and its variants, without risk of serious injury If you want a mind-f&*k confidence obstacle, then something like Toughest’s Dragon’s Back fits the bill perfectly, again without the high risk of serious injury. Heck, even something as simple and harmless as a 10-15 foot jump into water would stop and balk many racers, with almost no risk of any remotely serious injury. OCR should challenge racers. But it shouldn’t break them.