Realistic training in the real environment with a lot of sweat, dirt, challenging clientele and aircraft that leak a few juices
Which means never record defects in the maintenance release without first asking the owner if it's OK with him.
Then head off to the NT or similar with no financial encumbrance and enjoy the adventure!
And risk losing your job if flying with an unscrupulous operator. Now that's what I call realistic training in the real GA environment