You didn't seem to think "real life players fail to follow the rules all the time" in your previous post:
coolhandlewke wrote:nothing is ever sure, but runners are supposed to follow the unwritten rule unless they are VERY confident.
As to Hal making "bonehead plays more than the norm," I would say that's solely restricted to occasional unwanted steals of 2nd and third. That being said, nobody ever cries when Hal successfully steals third or home without the manager's wishes. The managers just usually add that successful play as proof of his strategies, not HAL's. If HAL actually made substantially more "bonehead plays" than the norm, this game wouldn't work. It does, so HAL predominantly does ok.
As I've said on other posts, the best way to avoid unwanted steals is steal clear of "aggressive" or "very aggressive," put players you want stealing on "steal more," and players you don't on "don't steal."