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JohnnyMaya said...
As you pass that weight limit, your board will sink. Not a sink into the bottom of the ocean thing, but sink until the flotation from your own body starts becoming relevant and you start having "less weight on the board", if this makes any sense to you.
Exactly. Note that you must also add the weigth of the board / fins /paddle / wetsuit to your weight.
The extra "floatation" you can get by immersing parts of your body, and keeping your board moving, even a tiny bit, is quite real and well known to windsurfers slogging on boards with much less volume than their body+gear weight.
Whether you want to struggle so much is debatable... and depends on your age I guess... :-)