I can't say I like the idea of nearly completely ignoring a position group because it's "too hard" to scout them in college. You have to be able to identify players no matter what they're asked to do in college.
Yea, don't have to spend a first round pick on one if your skiddish about drafting Oline early, but don't completely ignore the position. We have a lot of money tied up in the Oline, probably a good idea to draft for depth rather then spend more money, if anything go spend some on the Dline in FA.