I would say get a good map and study the lake. It's been a number of years since I fished it myself. I will be fishing the Texo Tourny myself with a co-worker and another team of co-workers. So best of luck to you, I also was sent this link to a map for the main boat run. Just be careful as there are some stumps around.
I'll be there in a couple of weeks so any info (after your tournament) would be greatly appreciated. I'd generally just like to know about the grass situation, water clarity, shallow or deep bite, etc. Thanks!