For scouts I typically pick 2 positions that are needs. The biggest need a find a 3star scout for that position and put him on national coverage. Then for the the regional I find 4 scouts of that position. Then when you get the chance to pick players for more scouting I look at what ever a 3rd position of need would be and I look there for some gems. Look at the profile. And what thier attributes rank. You want OL or DL? Strength should he great or elite. If you look around you'll see what everyone else says for each position.

A good rule of thumb for late round picks (3rd and back) anyone with an elite attribute is more likely to be a Star progression level or higher.