[brucehoult]

I've been a gliding instructor, sometimes doing up to ten flights a day, all summer (e.g. when I was unemployed for a time). In the NZ/Aus/UK style clubs you don't get paid for it, but then it doesn't cost you anything either.

[cjbgkagh]

I’ll grant that glider flight instructor are probably among the best pilots in the world, even if unpaid.