Although street parking has been a little more difficult to find this year, I've been pretty good at finding free parking less than 45 minutes before kickoff. I've only paid once, $15 a block over from the cemetary. I arrived very early for homecoming and got a nice spot on campus a block over from The Quad. If you get there four hours before kickoff you shouldn't have any trouble finding convenient, free parking for the ULM game, particularly if you have a pickup to jump a curb.
RTR,
Tim