Like Bass said, wait until the water warms up a little during the day. I also get most of my catches on something that goes a little deeper than what you have been using.
Jig 'n Pig, texas rigs, carolina rigs and crawfish colored big lip crank baits are what I mostly use. Most fish get lazy as the water cools down and you really have to slow things down to get them to hit it. Natural colors in the winter are a must around here as well.
BTW, I've caught more fish on yellow and pink trick worms than anything else in my tackle box. Your girlfriend made a good choice but that is more of a warmer water bait.
I do live in a warmer climate (South Carolina) so take that into consideration when you read my post. What works here doesn't work when I visit family in Arkansas so it might not work great where you live.
