i just had sashimi out and he came twice - he doesnt use a goodie.
put all the goodies you want out but have probably sashimi out (it works best i think) and then wait a while. its quite expensive though having to wait a few days for him to come at least once and constantly restocking Sashimi. Make sure you have enough of it and then i think you put it on the side he comes? not to sure. hope this helps!
good idea!
I personally just left out some Ritzy Bits (Or the cheapest food you can get with Gold fish) and some Bonito Bitz on the otherside. I just waited a while. He sometimes takes food from the other side of the yard
You have to be patient with WhiteShadow and you have to continuously restock the food. It may drain you a bit but if you have good food/good toys the cats should be able to give you enough fish to purchase more good food. Also depends on the Model your yard is. Sometimes he's there and you don't realize it. That's why I have the Western model for my yard because he's easy to spot.
Hope that helps :)