I'm in.

It all got a bit complicated last time, didn't it?

A suggestion (I'm open to others)-

Get to a central southern location (Portsmouth?) by boat or other transport by 11am ish Sat; make up some girl only crews on a couple of boats for a quick afternoon blast;meal and lots of drink evening- with partners if you want;kip on available boats or b&b; disappear after hangovers Sun am.
Maybe not a perfect plan, but it's the simplest I can think of that involves both boats and booze and minimises away time from sprogs/work etc.