You might want to double check that 800ft water level. Fresh water can be found in most of Texas west of I-35 under 450ft unless you are up on the high plains and drilling into the Ogallala Aquifero or in deep west Texas past Midland. As for a dry hole, find a local water witcher. Check in with the nearest feed store. The older the better. Those old timers sitting around BSing can tell you a lot. Good Luck...