I'd go for the Solitary Sand! Jacks are a lot easier to connect with that Solitary Sands.
Andy what did you connect with on Scilly - you got the Waterthrush and the sandpiper - any other biggies?
Also interested to know the logistics if you don't mind sharing - how did you get there, length of time on the islands, cost etc.
I know it's not Yorkshire, but is relevant on a Yorkshire thread for birders needing to travel from Yorkshire.