Admittedly, many of these types do look like ankus/elephant goads, but I still think with the marking, general shape and from past examples I've seen, it's a gaff. Now a logging pike? That is a possibility.
Anyway, here is an example of what I'm talking about- 3rd example down.
http://www.civilization.ca/cmc/exhib...liswl02e.shtml
Now here's one that might be an elephant goad or it might be a gaff. You decide. I think the side langets, being a European/American afactation, could point to it being a gaff.
http://www.worthpoint.com/worthopedi...aval-boat-hook