<<If a modern helo knows you are about he will more than likely be able to well and truly out manoeuvre you and the next thing you know - "bingo".>>
Back in the 50s it was the same with the meatbox against a helo. Hare and Hounds of something like that. Best way to catch the rabbit was to treat it as a ground target and just do a GA on it. It moves, it wins, it mves the wrong way it dies. Either way the FJ doesn't hang around.
Why bother? A kills a kill.