Yep, very few have pulled it off. Day, Meyer, Spurrier and Saban (just to name a few) lined up on Saturdays with large talent advantages 10-12 times every fall.
I know this makes me sound like a hater and as if I’m discrediting them but the track record on the NCAA to NFL move isn’t pretty.
Day has some endearing qualities. He’s an elite play caller but I don’t think he’s proven enough at the college level yet to warrant NFL attention.