Well just repeating my earlier points.. but agreed, high-g maneuvers are not for novices. Don't forget however the average drop zone pilot does anywhere from one to four dozen of the exact same profile in a given day and indeed can get very good at the job. You may see red flags, but with that much practice you could probably swallow swords and juggle burning tennis balls. It's 12 straight hours of practice many days. Same for entering full beta in a King Air on the decent, another "red flag" technique that is done all the time. One can develop a very fine sense of what is safe and what isn't with enough repetition of just about anything, and decades of accumulated experience is also there to draw on.