I always found that demonstrating the "proper" way to toss a cast net was a little intimidating. I found this video to be clear and understandable. Give it a try and comments are always welcome.
Fun Fish- Long Island is full of "other" types of fish that are not only fun to catch but fine to eat too. Did you ever try Triggerfish? A tough critter with even a tougher skin. However, once cleaned <Fillet A Triggerfish Video> they are a fine meal.