I love this, but unfortunately, there are a few rule infractions here:
1) No part may detach from the robot.
2) That is WAY above the height limitation, even during the FINALE.
3) There are no bumpers on the robot.
So if you were thinking about using this design, make sure the tower stays connected to the robot and within the frame perimeter which is surrounded by bumpers, and only extends to 60". Maybe a really intense light focused onto the sensor would work.