In A1/A2 have the dancers look at the person to their left each time. That is where they will end up when they cast.
To do an 'extended' twirl, start as though doing a normal California twirl but at the end pull the joined hands between you and then let go as you turn to face back in. The net effect of an extended twirl is that you end up facing in the original direction but have changed places with your twirlee.
The tune is published in Waltz Book IV (editor, Bill Mathieson)
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