At about 1300 central time, a Maule M-5-235C nosed over while landing at a private airstrip near Jay. The pilot was not injured. The pilot said he performed two touch-and-go landings without incident, then remained in the pattern for another touch-and-go landing. He said he touched down with 20 degrees of flaps extended within the first third of the 2,000-foot long runway, the airplane bounced but he did not go around because of powerlines that were located at the end of the runway. The airplane touched down again in a tail-low attitude with about 1,000 feet of runway remaining, and the pilot applied the brakes to stop. The airplane nosed over, coming to rest near the departure end.