Spending pearls to buy hats and upgrade slingshot
I am trying to determine the most efficient method for spending pearls to buy hats and upgrade slingshots.I am tempted to spend 140 pearls for the birthday hats for all seven birds, which I assume from other reports upgrades my slingshot to bronze. I don't really know how this benefits me. Is buying now a better approach than waiting to spend 100 per hat to purchase the bird-specific score-increasing hats?Any thoughts?