$600 is not too expensive. It would be nice to make some introduction clips or other scenes for embellishing the video. Wouldn't have to be the fish fight, but something else to set the mood.
A birds eye view of everyone on the beach getting ready to launch, or following you through the surf. Scenes traveling out to fish, both land and water.
Etc.
I can visualize some nice new angles to spice up these kinds of fun video productions.
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If it's launched during a fish fight, I wonder if it's easy to find and retrieve after the batteries die? It would be nice to have some kind of reverse homing device for a pickup.
Here's the pre-order web link:
https://www.lily.camera/