I don't think there is any good way to find a winner in a tied game in playoffs. I think, after losing in PK's in the first round, that the OT's should be longer. The 2 10's are fine but then to make it 2 5's golden goal, i thought was to short. we had barely enough time to switch sides and get momentum.
Every playoff system has this predicament; the only option is to play til someone scores and make it all golden goal. But that is one opinion and idea...but i don't think it will change.