If there is a bad shot, is that on the guide or the shooter? Clearly the onus should be on the shooter and if it is, then it should be on the shooter to determine if they think they can make the shot. Absolutely agree not everyone has sound judgement however, that's not for the guide (or anyone else) to decide for that individual. I know the guides have all these horror stories but again, that's not on them. Get the shooter in the best possible position and let them make the call. Only exception I can see to this is if a guide has range time with a shooter and knows they can't hit the broad side of a barn.