I was the only person in the isolated hide and initially I was struggling to make out any birds along the lagoon edge.
Eventually I was joined by a Welsh birder and we found two sandpipers at extreme range. Spotted sandpipers are extremely similar to our common sandpipers when they are not in breeding (spotty!) plumage.
This is massively cropped in and we were trying to make out whether it had yellowish legs and whether its wings stuck out beyond its tail or not! Not a chance. Eventually though a few of the local Portland birders turned up and by looking out the other side of the hide we got onto another bird which looked a lot better.
I stayed in the hide for probably 3 hours and it never came very close but finally did show for more than a few seconds at a time - fortunately for me but not for the other birders who had all left by this time!