living on an island year round

[CAVU]

I feel the only realistic waterfront property I could afford is an island property. However, I am a year round resident so I would want to live there year round. Does anyone know if people live on some of the islands year round?? It would be great, ultimate solitude in the winter.. My only thoughts would be that i would need to have a mainland slip with deeded parking and a hovercraft for the off season..