Here's a novel idea:-
Leave masts at home and launch in beautiful rural Lancashire near historic Rufford Old Hall. Overnight adjacent to an excellent country pub.
Then into the city. A brief glimpse of what's left of the old and then onto the spectacular waterfront and Albert Dock complex for a City Break.
Fabulous architecture, Beatles Museum, Museum of Liverpool Life, Maritime Museum and The Tate are all nearby. Or there's the Walker Art Gallery, Liverpool Philharmonic, Matthew Street pubs, 2 Cathedrals, to name just some of the obvious attractions.
Travel back by canal or maybe train to collect trailers and recover boats at adjacent Liverpool marina.
Date and duration to be discussed.
If you are interested please let me know (just reply to this post or email firstname.lastname@example.org) as soon as possible so that we can gauge the potential for this slightly different take on a Mac Rally. "Expressions of interest" now would be really helpful - no need to be concerned about commitment at this stage.