Yes, he is unproven. But has had only two head coaching jobs at subpar programs and turned them both around. He went to a 2 win SDSU team and in two years took them to their first bowl win in 40 years. Impressive by any standard. But to me what is most important is that he loves Michigan, and I believe he will work tirelessly to turn us around and prove the doubters wrong.
If our coach is Hoke, you should support him. That includes not agonizing over his hire on a website that fans, players and potential commits read.