I think those were both filler scenes. The plane and hitting cell with the disk. And imperfect cell was weaker than a super saiyan when he first showed up and resulted to hit and run strategy
Never let anyone else define you. Don't be a jerk just to be a jerk, but if you are expressing your true inner feelings and beliefs, or at least trying to express that inner child, and everyone gets pissed off about it, never NEVER apologize for it. Let them think what they want, let them define you in their narrow little minds while they suppress every last piece of them just to keep a friend that never liked them for themselves in the first place.
If he managed to activate it, he'd be able to out-maneuver Krillin for a few seconds, but that's about it. I don't think it would give him a decisive advantage overall.
__________________
"I am tired of Earth. These people.
I am tired of being caught in the tangle of their lives."