for the guys asking about re applying.
You will only reapply at the stage you're at, so if it's stage 3 you will come back at stage 3. However if you leave it a substantial period - over a year or so you may have to start from scratch again.
As to whether it's worth waiting six months and reapplying, well I failed my phase 2 initially and was asked back after six months. So I waited, worked for a few months and I'm out in New Zealand now. They'll only ask you back if you are close to their criteria and they think you'll make it through given another chance.