Cisc had made a comment about it in this thread :

https://morph.zone/modules/newbb_plus/viewtopic.php?topic_id=5156&forum=9

and i definately agree with it.

this questions have been asked a million times, please check the existing thread or at powerdeveloper.org, this was discussed many times there too. (Neko gave some riser references that may work, but i haven't heard any feedback from users yet).