Scouting D3 isn't worthless. I THINK the optimal D3 recruiting strategy right now is to scout and sign D1 players (internationals seem to have the least competition) but there is something to be said for looking for quality D3 players. I signed these three D3 JUCO players for very little (two for around 100 AP and the third for about 150 AP, 1 CV and some promises).
http://imgur.com/gallery/HQoAi
They will all be 60 ATH, 70 SPD, 80 DEF by the end of there second year. Two will be able to score efficiently and the third is PG with 70+ BH/PASS.