Try the Big Green/Little Green Brake and Jap Island areas around cypress trees 3-8'. You do not need a Louisiana license since it is border waters. You can even drive and launch in Louisiana w/o a problem or violation. Realize though that you can keep 50 crappie of any size in Louisiana, but if you launched in TX, fished in Louisiana, then cross back into TX and get checked by a TX game warden, you got a problem. I'm pretty sure he won't want to hear that you actually caught them in Louisiana and well...you got a problem.