Used to catch a lot of bones when I was stationed on Diego Garcia. The trick there was to hit them 20 min after high tide. As the tide slipped out they would start tailing all over the flats. Didn't have a fly rod so I used an ultra-light spinning rod with 4 lb line and small white jigs. I caught a lot about 24 inches long and the biggest i got was about 30. They are a very powerful fish. Silver rockets on after-burner.