[airair]

The back stroke is very important. Start to study the back stroke of your playing partners. You should soon be able to spot something being off in the early part of their back stroke when they hit poor shots.

All the pros you see on TV have a "perfect" back stroke by comparison so you have to study "real" golfers to appreciate this.

You are 95% right, but there have been some strange backswings - Furyk, Darcy etc - but they managed to have great impacts.