There is an annual 24 hour open boat race going on in Paris France, and for the first time there are FE entries.
I believe it is an open class with a kinked offshore type course, run on an inshore lake. the folks I know are running 12s 16Ah giving them 25-30 minute stints, 8x packs and 4 chargers.
https://scontent-lhr3-1.xx.fbcdn.net...dd&oe=59A74DD5
https://scontent-lhr3-1.xx.fbcdn.net...08&oe=59A8ACD5
https://scontent-lhr3-1.xx.fbcdn.net...33&oe=59BE5319
there is a bunch of videos on facebook, but I don't know how to link to it, if you are interested and know how, tell me how, or search Walter Geens, Aad Bervoets, or Fabrice Thepaut on facebook.