Good post Steve - especially the defintion of the Pan v Mayday.
I'm very open to debate and events being reviewed by others - after all this is how we learn from others.
I've considered the potential for Pan Pan call and pondered that despite all of skippers present ( three upright boats!) having considerable experiance and quals not one of us considered a call worth while.
I then considered is this due to the 'not wanting to loose face' scenario , but then considered the confidence & personality of everyone present and that if any one of us thought it needed - despite of what may be said after - they would have made the call without thought of 'not wanting to loose face'.
I think if you refer this back to the Pan pan - as soon as we knew the boat was flipped - we could see Matt swiming happily - so was not concerned for his safety. My own thougths were that I knew the boat was lightly rigged, so rigthing it should be simple enough and even if not possible a tow to Yarmouth inverted was as easily acheived by Grimalkin as Yarmouth Lifeboat.
The waves were a very defined set of about 4 or five outside of which was calm water ( as can be seen in the righting) so no risk of drifting back in to them as the current was taking us away.
Matt was in the water and watched by AJ & Longjohn on the side away from the Grimalkin, he was in communication when he was under there (I'll get the film to you so you can hear him whooping! ) . He deflated his LJ to ensure he wasn't 'trapped' under the boat and to allow more movement/ swimming (and he was in a drysuit with relatively warm water temps).
I'm happy to share my video with anyone for a view without judegment as an aid to learning two key areas - how the boats handled the waves and how we flipped the boat up. I'd say Matts driving wasn't textbook 'rough water handling' - but it wasn't about that ..it was about having fun - which is after all what we all go boating for !