You could make a post on some outdoors forum asking how best to sell it and see if anyone randomly asks you to sell it to them.

I thought that's what OP was doing. It looks like he might be getting a nibble above.
I once got a camshaft for a Dodge Dakota by asking for advice on finding one. I didn't need anyone to tell me to check ebay and craigslist. But posting a soliciatation in the general discussion channel of the dodge forum was frowned on. I thought there were probably a few sitting on shelves because people upgrading their cam didn't want to throw it away. So I asked for help. In a few hours I had one for the cost of shipping.
We just need to keep replying to this so it stays at the top until he finds a buyer.