and send hobbits like hell will sure slow down boss cause they need to stop to use their incrabilely slow attacks to kill those hobbits and will barly move if hobbits keep coming so use that oppiuty to kill boss with your ranged units [eg:wizard] and your tower to kill it
elmeatal arrows are SUPER good at bossing,espasily The End,because it will piece through the boss and deal impossible if hit cause when it piece through the monster continuously lose hp so the bigger the boss the better