I have made this argument before on other message boards, but Poe's issue is not lack of effort. A lot of it is pure lack of technique. He is exceptionally raw. He will often dip his shoulder and drive into gaps, trying to get skinny and blow by the blocker. I cannot understand why, in 3 years of coaching, they never taught him to use the raw power he possess. I mean, if you do not use your hands, how can you possibly translate that power to the field?
His DL coach has came out in the past few weeks and stated he was not used properly. Poe has said himself that while preparing for the combine, he worked with Da'John Harris and Harris taught him some techniques for handling blockers he had never even seen. Harris does this in less than 2 months. His DL coach did not do it in 3 years. That says something about the level of coaching he received.
People often get on his level of competition, but he faced Houston, Southern Miss, UCF, and some other good mid-range schools each year. In addition, he played Tennessee twice, Miss State twice, and Ole Miss once, not exactly pushovers.
He also did not get much help. One draftnik I talk with regularly likened it to Sisyphus (Greek mythology) and I think he hit that analogy. Sisyphus was the king that was sentenced to push the boulder up the hill, only to watch it roll back down, then repeat the feat everyday. Poe worked hard every play, only to see the QB throw a WR screen that goes for 10. The next play, they run off tackle for 12. I have watched plays where he pushes 3 yards deep, the RB sees him, cuts back into the lane he creates, nobody fills and the RB goes 40 yards without a hand being on him. Yet, he keeps rolling the boulder up the hill.