You don't want to be at the end of the season holding a bag full of cash. As mchale said, you never know season to season. It also depends on how much you have budgeted in your IFA scout budget. If you have budgeted a lot, it will increase the number of IFAs you will see. But if you sign one early, you have most of the season to develop him. There's no clear answer, really. If you see a guy you like a lot, I'd say you go for him.