So has anyone experienced the same thing, possibly the same area, other than your friend?
With AO's skinwalker there was a definite, unexplainable occurence and it was known of before hand from others in the area. Most situations like this has a previous history in the area.
It could be a help to yourself for understanding this experience if you searched around with the older residents. They might have come across this "beast" in the past, especially the ones who lived on the beach alot. They would have been out on the beaches during the night quite often I imagine.
Keep us informed on anything ya find!