SCUBA, My XM worked great last week on the island. Just make sure your antenna is outside the building and has a clear shot to the south and it should work. In other words point your antenna toward coco locos, (Tell Lou, Rose and Linda I said hi), Then hold it outside the building, make a right turn,and place it down facing south-southwest and you should be rocking/jazzing/sanatra-ing/ or whatever your into-ing.
good luck!!