Despite the fact that once people have gotten the knack of creating renku they often become fascinated with the improvisation and the pleasant creative stress it requires, several people have to gather together in order to create renku, and the compositional rules are more complicated than those for writing haiku; these and other factors seem to prevent very many people from joining the ranks of renku creators.
一度コツを掴めば、その即興性や緊張感から、連句の面白さの虜となり得るが、複数人が集まって座を形成しなければならないことや、俳句に比べてルールが複雑なこと等からくる敷居の高さが連句人口の増加を妨げていると推測される。