TMK,
Sunil is on track. 2000 lbs of bass to be taken out is a daunting task when your catching 8-10oz bass. You may consider having your lake electro fished. A shock boat could do the job in short order and get your predator base back in order.
The best way to know if your bass are healthy and growing is to measure and weigh your catches. If they are skinny, there are too many predators. If they are fat, then all is well. Below is a chart that might help
