This is so cool! It's an amazing idea and it's probably more than a non-existent business market.

I am a complete surf noob (went only thrice for a week or so to a surfing site in the north of Spain), but this sounds like it's probably an important need for some and otherwise it looks so rad you could probably sell them for good money.

Props to you, really impressed and from the video it looks like you've done them very robust too