Tournament fishing is more of a mental game than a physical game. You have to be mentally ready for everything.
Me and my partner have won 9 of the last 12 we've fished on 5 different lakes in two different states and I wouldn't say we are "above average" fishermen. We live by simple rules and it's paid off.
1: Get a limit as quick as you can. Our goal is a limit by the end of the 2nd hour. Sometimes it comes in 20 minutes, sometimes it takes until lunch. Get it quick then go kicker hunting.
2: Once the water warms and 99% of the guys play with top water early, forget top water. You lose more fish than you catch. Yeah yeah, I know, it's fun and exciting and yes we've all caught some huge fish on the stuff but.......... if you are trying to win money, I wouldn't mess with it. We don't and it's paid off. Anywhere I can throw top water we can normally throw crankbaits and the hook up rate is much higher and so is the catch rate. We've experimented way to many times with one throwing top water and the other not.
Perfect example was last June on Pickwick. We put 20+ in the boat by 8am on crankbaits. Had the starter not quit on us costing us the ability to go anywhere (GRRRRR), we would have won that tournament by 8am as 19lb won it. All the other guys struck out on top water for whatever reason but on topwater holes, we smoked fish on 3-6' Lucky Craft and H2O cranks. Happened on Wilson also. We tried topwater and nothing. We switched to crankbaits early and a blew everyone away.
3: Learn to fish off shore as that is where the big girls roam 90% of the year but you probably already know this one. Most of our early morning stuff isn't even within 200 yards of a bank.
4: There is always fish shallow.

We won a tournament on Wheeler year before last in 2-4ft in the middle of July. Everyone else stayed on those ledges but the day before we struck out and did nothing but fish water you normally wouldn't look at in June-Sept over here. We caught a bunch of fish and not many good fish but the few we did catch was enough.
5: Don't over do anything including thinking. Gut feelings are normally the way to go. If you've caught fish there before that time of year, they are probably there that day also. If your gut says leave then leave. If it says stay then stay. Keep your bait selection simple or you'll spend all day throwing crap you don't need to. 8 rods is plenty.
I learned a long time ago that it's not the days when everyone catches fish and you win that is great, it's those days in July, August, September when 10-12lb wins that is the best. When fish are biting from one end of the lake to the other anybody can win throwing cardboard. It's when those bites are 1 hour apart and nobody is catching anything and you turn it up and find a few fish and win, now that is awesome.