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Dol-fin customization

Thread Status: Hello , There was no answer in this thread for more than 60 days.
It can take a long time to get an up-to-date response or contact with relevant users.
I know it's fin-swimming regulations that forbid blade-widths over a certain number. In freediving we have no such limit. Years ago I talked to a friend Arnoud, who told me that some people had promising results with fins made short and wide.