Are trick plays ethical?

I think there is a real difference between "misdirection" plays like reverse, reverse pass, halfback option pass, flea flicker, etc., and gadget plays like "wrong ball" or "too many people." I use a lot of misdirection plays in my offense. They force the defense to maintain their initial responsibilities longer and help open up the rest of the playbook; in addition to all of the other reasons coachdoug offered. The gadget plays are at best unethical and, as has been pointed out, often illegal. Frankly, any coach that thinks he may be the next Vince Lombardi because he can fool a bunch to 9 year olds is sadly mistaken.