Join Date: Aug 2007
Location: Ontario, Canada
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Normally there is a line on the pole to help you expand it to the proper length depending on the point of sail and how much pressure you need to push the sail into position. That line should be what goes around the sheave at the outer end. Is there a small cleat or line jam cleat at the other end? At least that's how the expanding whisker pole that I use works.
No there's nothing like that. Between the two ends in the photographs are three sections of pole that telescope into each other. It seems as though the pole is extended by twisting and pulling and twisting to lock it.
1989 Hunter 30'
Southern Georgian Bay
The sea, once it casts its spell, holds one in its net of wonder forever. - Jacques Yves Cousteau