Tourist, I am well aware of 150' DH being available in Red conditions but Red is defined as below 200' cloudbase not below 200' but above 150' and more often than not Red conditions are a result of advection fog which gives cloudbases in the SW well below 150'.
I suspect I could ring the met office at Culdrose and find out exactly how often it is in Red conditions every year but I spend most working days looking the RCS and MOMIDS which show exactly what a poor weather factor the place has.
How come you did not know that your great idea about fudging required visual references is illegal - how did you not know what a precision approach is actually all about?
If I am digging at one point - it is your credibility to argue anything to do with SAR because you don't seem to be able to do basic aviation safely.
I suggest you stop digging.