flygirl,
Ag flying is one of the most demanding and dangerous forms of Aviation.
In Australia, it is an intensive course that must be attended after completion of the CPL (though very few operators will accept a pilot with just bare CPL and rating)
You then must be under close supervision for the first 1000hrs (no, I didn't put in an extra zero) of operation.
And we STILL kill a lot af Aggies (I lost a good friend a couple of years ago).
It's not some lark to build hours- it's a dedicated profession.