I certainly agree with you that the best tool is knowledge.
"sometimes EMS guys know just enough to be dangerous."
I'd think that you were referring to me if you hadn't described yourself so aptly when it comes to the subject of improvised care in the wilderness, a subject you don't seem to understand even as a "former EMS guy". (and you seem to be misinterpreting my posts):
"Your focus is on the idea that you have to do something. I contend in nearly all instances its better to do nothing"
Of course there are times where you don't want to take every action you can think of! I am not advocating otherwise. Of course you shouldn't do something unless you you can carry out the action so that it benefits the patient rather than causing harm. I wouldn't advocate moving someone on an improvised litter unless it was a necessary action required by situations such as:
1. outside help is not sufficiently available (ever been outside the US in a 3rd world country where help isn't going to come and there is no way to call anyways? or in a situation where help will refuse to come?)
2. patient cannot remain in current location (unalterably and (soon to be) dangerously exposed)
i.e. when the cost benefit of waiting for a professional 3rd party to come save the day isn't as good as the cost benefit of improvising, it may be time to improvise!
I would always rather have SAR, but there are times and places where doing nothing is not the best option because SAR is going to be too slow or just plain absent.
You apparently don't know much about improvised splints or litters nor have you apparently ever tried to build or use one (the right way). You can make a really crappy one or you can make a really good one. Of course they are rarely quite as good as a manufactured product. Are they better than nothing? Yes, if done properly. The traction splint I described (which derided after, based on your response, imagining it entirely incorrectly in your mind) functions almost exactly like a Kendrik Traction Device if done right. You can also build Hare or Sager equivelents with more gear.
Of course you can always refuse care if you are still alert.
But have you seen many femur breaks in N Texas? They are not that rare in the Colorado mountains. Traction splints are uncomfy and not without potential for complications… improvised traction splints are less comfy… but if done right they are a far cry better than doing nothing for a midshaft femur fracture that has spasming muscles shoving the jagged bone ends slicing up muscles, vasculatur, and nerves! I'd definately improvise a good traction splint for my buddy so he wouldn't suffer worse injuries and pain while waiting for SAR and a few hour extrication. Like you said, knowledge is key: Am I going to superpad the thing? Yes. Am I going to take advantage of hard shell mountaineering or ski boots? Yes. Will I monitor closely? Yes. In the summer with a guy with no big boots, am I going to try and use skin traction to augment an ankle hitch? Yes. Am I going to apply the device if the extrication will take days? Probably not. Etc.
You've got to be pretty ignorant to contend that improvised care (as taught by NOLS, WMI, DMM, etc etc) is usually worse than no care. Following your logic, nobody should ever make a wrist splint with pack stays, a camel back, webbing and an extra shirt (and then possibly walk themselves out 5 hours) because it wouldn't be as comfortable or safe (according to your illogic) as waiting 6 hours for SAR to show up with a vacuum splint, and then walking out for 5 hours with them (11 hours total). Only an extremely closed minded urban provider would make such a dubious claim. The wilderness is not a downtown street corner where Fire/EMS is <8 minutes away and the level I trauma center is 10 minutes away.
(for the record I am a WEMT and on a MRA certified SAR team and a member of the WMS)
PS It might surprise you to know that the WMS has recommended guidelines to taught to WEMTs (and I believe WFRs as well) covering the circumstances where one could perform skills such as clearing c-spine, packing certain wounds, closing certain wounds and reducing certain types of dislocations. Don't have a cow, man. ;)