I did a similar thing at Scapa, got all my kit onto the boat, set up some twins, put a 2nd pressure guage onto my set up and sat back looking happy with my mornings work. 20 mins out and lo, cr@p say I, my drysuit an undersuit are sat by the breakfast table back up at the house
Was quite lucky as we managed to get someone to meet us at a random little harbour, felt like a real tool, left my stuff on the boat for the rest of the week!!!