Final answer:
Heroic couplets are tricky to use because of the potential singsong effect caused by the frequent rhymes.
Step-by-step explanation:
The aspect of heroic couplets that makes them tricky to use is that they include many rhymes, which can create a singsong effect. This means that when using heroic couplets, writers need to be careful not to make their poetry sound monotonous or overly repetitive. It is important to vary the structure and content of the lines to maintain interest and avoid the singsong effect.
Learn more about tricky aspects of heroic couplets