Stripers and Hybrids are in Deep Water

We are catching our fish in 50 feet of water off the main channels. The fish are biting, for us, from 7:15 am to 11 am. Some morning we have the limit by 8:30. These fishing are weighing 3-9 pounds. The area that we are fishing have a lot of under water trees. We try to fish in 50 feet of water between the trees. We are fishing 3 cranks off the bottom.