.40 size trainer, .46 size 2 stroke. I did not have enough throw to sustain it, but as long as i pulled up strait vertical, it would hoild on for 4-5 seconds. That's what got me started in aerobatics. My goal is to hover just a few feet above the runway, right in front of the pitts. My plane is more than capable.
"I have got my hands on a rocket. Now to tame it..."