We have a pretty good club in the Boise area but I don't know of anybody in IF myself. I know there is a good club also in the SLC area that would be closer to you and might have better info on the Idaho Falls area.
I am pretty sure I have seen some posts some were from somebody in either IF or Poky, but I don't remember where. Have you checked out are club forum on reefcentral? That could be where I saw the post.
I would highly suggest though that you contact the SLC club www.utahreefs.org They are not to far away from you and I know they have a pretty big club.
actually there are a lot of us in IF area we have not gotten all together yet but i live in saint anthony and i am in idaho falls quite a bit, great person to talk to in the petco in IF ask for tim. my husband and i are into reef and fish tanks
I know there are a few people from the IF area that are one the IMAS forums also. Stop by at www.idahoreefs.org and say high, that way even more of you can get together. And besides that I can get to know you so if I ever make it to that part of the state, I know were to go begging for frags