In October 2018 we set about starting to make a how to video on sailing a performance boat upwind and somehow that led to putting a 4000 in the swimming pool at Nikiana. The video is still not finished but here's a quick look at some of the footage.

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Quick test of a tiny QEV cannon firing air at 12atm, viewed through a Schlieren setup (no razor blade). Edited from to 1/4th normal speed. I didn't quite understood the need for a razor blade but without one I still see the flow of air. For me, the razor blade just makes the dot of light smaller(?) If anyone can clarify me what the razor blade really does and where it should be placed (in the source of light or in the camera) I'd really appreciate. Also important to note that this is AWESOME to look with the naked eye but almost the dimmest light can blind you. I covered a tiny LED torch with aluminum foil and punctured a hole with a sewing needle, on the side! so that the LED doesn't bright directly through the hole. Take care with the eyes!!

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Every trip is different, but one thing stays the same—beautiful scenery and an incredible day on the water. Book your sail: https://sailcocoabeach.com #DolphinTour #CocoaBeach #Catamaran #FloridaTravel #VisitFlorida

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What do you do when you arrive in the harbor and you like to lower your rolled code-0 sail and it won't come down? There is a twist in the line of your sail. At the top of the mast of 21 meters high. The twist is so strong, that trying to turn the sail the opposite site won't help. Only one solution: put on the bosun's chair and hoist to the top of the mast to untwist the line. That's what I did to make the twist go away, so we could lower our sail successfully.

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