After clearing all bases in clan war many people want to attack higher bases for more war bonus.so u may try this.just count all bulidings including defence and evaluate whether u can destruct half of them.if someone have 50 buildings including defence ,resources.everything counts except wall.u have to distroy 25 of them.i am not sure about this trick or method.so please before implementing try it in friendely challange with u r clanmates.if this works let me know.dont hesitate to reply if it works and causes 50 percent damage.thank u friends .