Hi John,
Thanks for that very logical advice. It will be interesting to see how the spreaders work as they are the wibbly wobbly kind! i.e they flop and turn in all directions when not under tension.

I have aquired a pair of aerodynamic ones, which may fit and provide the correct distance tip to tip.

Just been out cleaning the decks up, hope to epoxy this weekend.

Here are a few pictures taken over the last 7 years.