= a difficult swimming-stroke to swim or impractical
 = means that this swimming-stroke never descripted clearly
 = the rating of the swimming-stroke (a rating of 8 is good to swim)
    PS: Swimming-strokes are derived based on their visual resemblance.





This swimming-stroke sounds difficult but it really isn't. At least, if you master the short Trudgeon and the long Trudgeon. The double Trudgeon of Boisseau is a combination of the two swimming-strokes where both are swum at one side (unilateral).


This swimming-stroke looks like the double Trudgeon of Boisseau except the legs make a wide scissor-kick + crawl per armcycle.


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