Definitely young students. I once gave some lessons to a friends 12 Y.O. At that age their brains are like a sponge. She would have soloed in about 5 hours if she could have legally done so.
The worst? Car salesmen, lawyers. They bring their attitudes and reputations with them.
Hullo Dan. How's the Vegemite?
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JARSE! Pull and rotate 90 degrees