Hey Rock,

I've never eaten either but I hear that you just cut the skate wings off and use either a cookie cutter or a metal pipe with the one end sharpened makiing it like a cookie cutter. Never heard about having to soak it. Just cut, skin and fry it like a scallop. As far as the dogfish go YUCK!!! But if you must, I hear that you need to soak it in (I believe),milk. You need to get all the poisons and toxins out of it.. Maybe someone else knows. I can ask a coworker tomorrow and let you know.. Good Luck...