I am soon to do a check ride on a C182RG and one of the things to be covered will be engine failure and forced landings. I have looked at the POH for several Cessna types with variable pitch props and the subject does not come up at all. It seems obvious to me that the less drag the better, at least while gliding to the landing spot, and I wondered why there was no mention of this. I figured it had to be because there was either no drag benefit (or negligible) or some reason why it was not a good idea (engine impacts, cooling, possibility of not recovering during go around, loading of the camshafts or something like it). Thus my question. Any ideas would be appreciated.