You’re able to upgrade that Mortar into Level 7, however that is only going to give you seven additional DPS, you might also purchase that Gold into two Archer Tower upgrades which may give you double that DPS.
Whenever you upgrade two Air Defenses at precisely the same period, it is possible even to compose a considerable banner which says, “everybody else ATTACK ME NOW!!!”.
Your base becomes considerably poorer if surveillance is busy updating, mainly later in the match at which an upgrade may merely take eight town hall base.
Attempt to prevent modernizing two Defenses of precisely the same sort at just the same moment.