First of all let me say, thanks for the great link Ken. Good info there.

Thanks for taking a look at the online photos to try to figure it out Phillip. I was guessing that somebody out there who had one of these whistles would know what that knot in question was.

Realizing that some knots have several names, would the half hitch on a half hitch be the same as a double half hitch? Something like this ?

Thanks all!