Thanks! I wasn't sure about that, because I've heard form a few D3 friends at LSU that if LSU is declined by an Arkansas resident they will give that spot to a Louisiana applicant. The way it was explained to me was that LSU only has to "accept" 4 Ark applicants, I don't think there were any Arkansas students in LSU's c/o 2012 because those applicants declined LSU. It may be different for the other out of state spots though, I'm not sure.
There are 4 arkansas residents in LSU's c/o 2012, myself included. I think there are only like 8 or 9 total AR residents in the whole school. You are correct that LSU will grant the spots "reserved" for AR to others, mostly instate. Not sure why LSU is overlooked by Arkansas residents, i just think most focus entirely on UT.