I don't know how this behaves in the water. I've thought of using a sealed PVC tube of larger diameter as a simple float, but this takes it a step further. Very ingenuitive with lots of possibilities for modification and rigging.
PVC spearfishing float board plat
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Reminds me of an AB board. Pretty cool. I'd be interested to see how buoyant it is. How heavy is it?
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All I have are the pictures.
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One of those "why didn't I think of that?"
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It may sit too low in the water with that diameter pipes, and the stretched fabric will create drag.
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Sorry for using metric, but it's not hard to get PVC up to 250mm diameter. 160mm even easier so getting the buoyancy is not an issue at all. Bear in mind that PVC is a heavy material so get the pipes with the thinnest wall thickness that you can. I checked it a year or so back when I thought of making a gun tube - it would easily have weighed 3-4kgs in about 140cm.
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It may sit too low in the water with that diameter pipes, and the stretched fabric will create drag.
For the fabric I would say replace it with a cargo bungee net (the ones you will find at your basic motorcycle gear store). That would still give a backing so it works like a pocket with the other bungee crisscrossing over it (or another cargo net over it). Drag from fabric solved.
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