Yes, Guly did miss a chance, but I think you'll find that Rodriguez also missed a couple of equally good ones in the first half, and he didn't even get his efforts on target.
It seems that people are all too quick to criticise Guly, but conveniently forget the mistakes of more "fashionable" players.
Guly's link up play and touch was excellent when he came on, and he totally justified Adkins decision to bring him on in my opinion.
Not having a go at Rodriguez by the way, who I thought had a good game, but should have had at least one goal with the chances he had, and was tiring towards the end.