Jacking up front of car in one go on subframe-dangerous?

[306Puggy]

I don't like your attitude so I won't be taking advice from you. You are one of those douchebag mechanics who thinks that no one else should be able to work on a car unless they are "qualified". But you need to be more specific anyway, because the chassis leg is covered by the wing?

Edit: This is how I have got it supported at the moment:



I normally do it like this and it feels pretty stable