If we were to judge Hook's use of Ben Hunt on this season alone, I'd be fine with it. From all reports, Ben Hunt wasn't playing that well in the trials and the pick of the bunch was Prince/Wallace. Now, I was calling for Hunt to be selected in the halves a lot sooner than he was but others argued that the incumbents were developing as a pairing and we shouldn't tinker with a winning side. Hook saw it this way too and stuck with it until Prince went down with an injury in Round 9.
Hunt was given an opportunity up to Round 12 to prove himself and was even preferred ahead of Wallace. The problem was, the move coincided with the Origin period, a stressful time for the club where the club struggles to field a consistent 17. Hunt's performance in that game was terrible and it proved that he wasn't ready to handle the responsibility during that time.
Fast forward to Round 20 and I don't think it was a coincidence to see him re-instated as halfback as soon as we had our full contingent back. Hunt has been very patchy and you can understand why Hook was hesitant to play him. He's still very rough around the edges and is a big question mark at this stage.
However, if we were going back to when Hook first started, I don't think he's used Hunt well at all. The point of playing a half off the bench is to get them used to the speed of the game and see how they handle it. Hunt had already done this in 2010 and showed improvement. Yet, Hook seemed content to keep him there and I believe it hurt him in the long run.
Despite this, I also think Broncos fans have the tendency of overrating Hunt. I believe he is better than what he has shown so far, but he seems to have this reputation of being the best NYC player when really he was the beneficiary of playing the most games. As somebody who attended a lot of NYC games at that time, I didn't even think he was the best Bronco - I thought that honor belonged to Hoffman & McCullough and that opinion was vindicated when Bennett selected them.
TL;DR - Hook's use of Hunt in 2013 was justifiable. From 2011-12? Not so much...However, still remains to be seen whether Griffin had a turd sandwich vs. giant douche to contend with in the halves. 2014 will be a huge year on a lot of fronts I guess...