Will and Sarah Curry walk you through the process of installing a Hydrovane on a Cal 39.
In Part 2:
0:00 - MOUNTING THE BRACKETS AND SHAFT: H Bracket first, Positioning of the Shaft, Secondary Bracket, Bolt Tightening Sequence
A note on aligning the Hydrovane shaft: it needs to be 'boat vertical' (ie, in line with boat's mast and keel), rather than gravity vertical.