Whalsay has the largest population with approximately 1,000 residents, followed by Unst, home to about 600 people and Fetlar with 60. Rev. David Cooper has been the minister for the united parish of Unst and Fetlar for the last seven years. He's also minister for the parish Yell, population 900.He lives on Yell and travels to the other islands to hold services and work with his congregations. It's a life determined by ferry timetables, he says.veryone looks out for everyone. Of course there are problems – it's not idyllic–but there is a sense of community.. Originally from County Durham, Rev David Cooper first came to mainland Shetland 30 years ago as a Methodist minister.