American Football Rules IFAF Approved Ruling 8-3-2:IV and VI

IV. On a one-point try attempt, Team A’s kick is blocked. A2 picks up the ball beyond the neutral zone in the field of play. RULING: The ball is dead where picked up by A2. The try is ended. [Cited by 8-3-2-d-2]
V. On a one-point try attempt, Team A’s kick is blocked. The ball, untouched beyond the neutral zone, (a) is recovered by B3 on his one-yard line or (b) hits the ground in Team B’s end zone. RULING: (a) B3 may advance the ball. (b) The ball is dead, the try is ended (Rule 8-3-1).
VI. On a one-point try attempt, Team A’s kick is blocked. B3 recovers the ball and advances across Team A’s goal line. During B3’s run, B4 clips. RULING: No score, the try is ended, and the penalty is declined by rule (Rule 10-2-7-b). [Cited by 8-3-1, 8-3-2-d-2]