Imagine going into an instructor rating test/renewal with CASA and putting your own theories on the board... There would be only one result.
Got a laugh out of me!
But, not that bad, the FOI's I have dealt with with would be approachable on differing methods so long as you knew your stuff 100%. Its only a blackboard brief for the purpose of demonstration.
Now picture this, you are on an airstrip in a single with trees that require exactly the precise angle and all that. You paced it out. My question is what are you doing there in the first place? You are a crash waiting to happen.
Worse still, you wait until Vx appears on the ASI before rotating. This is sadly what I was taught.