Your lucky,

I was on Kodiak last year in Sept but on the west side of the Island. I love it there and cant wait to go back. I fished some of the road system rivers on the South East side the day before we flew out for the west side and caught a load of humpies. I think the American and Russian rivers were the biggest had the most fish. I bet your best bet for dollies would be in the salt that time of year.