That would not be a correct assumption; what I said was based on a single conversation I had with a South African hunter who hunts with his son in the bush.

So apparently some people do it differently; I won't speculate on who's right or wrong.
The guy I talked to said he and his son post watch because they're concerned about hyenas and leopards where they hunt. Real people do it. Whether they're going to unnecessary lengths is another question, but I suppose it gives them peace of mind.