How has Mr Sheens gone the last 10 years?
He's won a premiership. I'd consider that pretty good. Then he went to the cowboys. The management there were terrible. They kept buying players that were over the hill on big money and expected Sheens to do the rest. He was clearly unhappy up there, so I'm not surprised he wasn't labelled a success. Even though they thought he was a good enough coach to be signed on a 5 year deal. Then he was eventually sacked, because they thought he was the problem, not the fact that he was coaching a team with very limited pertencial. He hasn't shown much interest to coach over the last 3 or 4 years, so that makes about a 3rd of the last 10 years hard talk about.
If you were refering to the last 10 years he was coaching, I'd say he was a great coach. How many years did canberra make the finals in a row under him in that time and how often where they a major threat of winning the comp. Plus how many players he coached went onto represent. An absolute heap.
So yeah, was he a good coach. He clearly was!