I was told by a old trapper that anyone can print a book .It dose not mean they really know about trapping.It will be wrote to trap the way they are use to but that is not the only way to do it. A true trapper is always learning. Those that say they know all about trapping are the ones that do not need to spend time with,just like those that say you can only catch the animal on there lures and baits only. When it is not .Just a sales thing.
Also one that dose know alot about trapping they will use blind sets, beside bait and lure.