Trick, if you get skins off the auction site make sure they are dried and not tanned.
Timber rattlers are protected in IN but canebreak rattlers are pretty much the same thing. Look up Charles Sinclair here. He goes by snakewood3. I buy all of my skins from him usually. He is looking for some copperheads for me. I just got 2 sets of canebreaks and some water snakes that are fantastic. Mike Yancy is another good one here. I got a feller in texas working on getting me three sets of copperheads but it may be a few months. when he gets back to me if I decide to part with a set I will let you know. Just send me a PM so I don't forget.
Just sit tight and be patient, right now is snake killing season so there will be some stuff come up in the classifieds before to long.
Stiks