The amount I spend on scouting depends on where I think I will place in the standings. The better I think I'm going to do, the less I spend on scouting. This is because if I do pretty well, I'm going to have a lower pick, and probably won't get the guy I spent 3 scouting points on.
A lot of people don't spend a lot on scouting because it is kind of a crapshoot. Sometimes, you get a really good prospect, other times you spend $10,000 a week to get nobody even worth training.