I don't have the 360 yet, but I think others are using the offset to offset to your fishing position, so what you see on the 360 represents the actual direction from you.

See some of the shots Kosmo has posted where the offset ring from his transom 360 shows the actual position of the bow of the boat....especially useful when vertical fishing or trying to determine where to cast to a target.

In your case, if the 360 and HS gps is at the bow and you are fishing at the bow, you already have the correct perspective.