These are more expensive than the basic $6-7 copy of a Mustad gaff hook, but they look pretty nice:
http://www.amazon.com/Shurhold-1804-...eel+gaff+hooks
I was pleased with the commercial quality of Danielson brand hardware I bought recently to make my halibut straight gaff with slip tip. The marine quality stainless steel was quite heavy duty and beautifully polished. It was better than I expected.
Here's another gaff that looks interesting for the price, handle shape and material. The nicely turned handle doubles as a club. At 32" it's a convenient kayak size.
http://www.amazon.com/Danielson-Gaff...lson+gaff+hook
Personally, I would drill the end of the handle to hold a nylon wrist cord and tether point, and it looks like the wood edges could be sanded down a little for a more finished look. I would also spend a little more time to taper smooth and sharpen the tip over the straight angle bevel it comes with out of the box.