Its just that I cant afford to fly them for free too!
Ahhh, but that's just the thing isn't it. It doesn't cost you any extra to take people with you.
Assuming you need to do the hours anyway (which, I think, was the point) - having a bit of company with you while you bore endless holes in the sky is to your benefit.
Were there any justice in this world
you should pay
them 
Hope this helps
