For this, you need any dual-wielding lightsaber's.
Fly with unlimited jetpack with dual lightsabers until you reach a cramped area and you can't move foward. Wait about 3 seconds and immediately tap X one time and you will fly SOOOOOO high, that you hit the boundary (the highest a jetpack could go). Hope this helps!
-LD
P.S: This is really useful for CTF games.