That is not bush flying guys, so don't pay any attention to this garbage. That is what I call dangerous flying.
As for only 1 or 2 years out of your life? This has the potential to end your life. Rolling non aerobatic aeroplanes and unauthorized low level flying has no place in our industry.
What about the next bloke who flys your aeroplane after you've been doing aerobatics and the wings do the slap? How would you feel then?
The goal of all Pilots is to be as professional as possible, and to display sound airmanship at all times.