I love Bonemare too much. When I'm playing against a weaker deck, it works out great, but when I'm on the ropes, it's definitely not a clutch card for me.
I just started finding that if I can be patient enough to play it with a charge minion after controlling the board, it works out pretty well.
I assume you're talking about constructed? But anyways, it's definitely a 'win more' kind of a card, as you were saying.