I personally think berserking in tournaments is unbalanced, because it gives huge advantage to strong experienced players, when they choose to berserk or not. I think the best way to fix berserking in tournaments is to force payer to berserk every single tournament game or not berserk at all.
So my suggestion is: before entering tourney player should choose should he berserk every single game or not berserk at all.
So my suggestion is: before entering tourney player should choose should he berserk every single game or not berserk at all.