I tried one a couple years ago. We put it on ice after it jumped in the boat with us - about 10 lbs.
I didn't bleed the fish, although based on the meat flavor, I don't think that's necessary. We also trimmed off the red meat. I didn't ever really get a good understanding of the bone structure with the Y-bones...we ended up cooking the fillets whole and then pulled the meat off the bones in pieces. Pan-seared in oil, garlic, salt, and pepper to try to keep it simple so that I could see what the fish actually tasted like.
I agree that it's good with seasonings. It's really too bland on its own...I didn't think it tasted like...anything at all. My biggest complaint was that it seemed just a little odd with the texture - like it was a bit gummy at the end of the bite?
I want to try it again and see how it goes. I'll probably try breading it and deep frying next time and trying a dipping sauce, or making a spicy batter or something.