I love scads.....
I don't think they are that boney, no more than herring I think. The mistake people made is to fillet them, once filleted, the tinny bones are difficult to get rid off. I like to pan fry the who fish and seperate out the flesh using knife and fork, it's much easier if the back bone id present. Remeber to cut out the few scales on the lateral line near the tail. Sprinkle a dash of light soy sauce just before lifting off pan, it adds to the favour.
I quite like doggies, didn't like tope, haven't try a smoothy thinking it's more tope than dog.
Watched an old Floyds programme and he said Weever fish is quite nice. Don't supposed anyone try it?