I used to do that when i worked at Honda its a fine art and you have to know your limits.

used glue and slide hammer to remove dents where bars cannot get.

Its a difficult to glue on a repainted car as u dont know how well the paint has taken.

I have lost the touch now being over 7 years but a good mate still does it and mine now lol.

Good job and cheap option.

But guys be warned there are a lot of wannabes doing this and can fuck it up big time.