You might try paying more. If you don't pay enough you won't attract worthwhile staff to a remote location. And are you looking for chefs, or cooks? Are you offering full time, year round positions or just seasonal? Seasonal work in a remote location isn't very attractive. A lot of cooks spend 6 months on the islands and 6 months up north, but Maryland might not be an attractive spot for seasonal workers.
Just some thoughts.