At least the monopod is an ingenious design!
Reading this post and others like it I see "I want good fireworks photos" ... but between the lines I see "but I don't want to carry a tripod, stake out my spot an hour early, and defend it with kung-fu". To the OP, please correct me if this is not the case but I think I understand because most of the time I don't want to go to all that effort either.
Then there's the ND filter and the 15 minute long single exposure and "oops, forgot focus, try again tomorrow". Many of us on this board don't mind carrying a lot of equipment and go to WDW fairly often but many people are off to another park tomorrow, won't be back for years, and only have this one chance to get some photos. This is my focus (pun intended) for testing ideas of how to get good fireworks photos without a tripod.
I hope it helps someone who is just looking for an easy way to get some memorable photos.

Btw, I used auto focus and semi-auto exposure too.