Thank you so much mjes and debkellie. I was googling for the info putting her name and onion rings and nothing came up that pointed me to the right direction.
Mjes, the recipe link you posted is one way I normally make onion rings and it is good one.
Debkellie, I am going to use the double dip method you posted, but in addition will drizle some batter on second flouring to see if that will produce more cragginess much like some fried chickens. The ones she is serving now are definitely more craggy.
To make professional tempura, the chefs in Japan will drizzle small amount of batter using fingers on pieces as soon as pieces hit the oil to make what is known as flowering. I have not mastered that technique yet. The pieces flare out beautifully producing very light tempura that needs to be served and eaten immediately. Very different from American style substantial coated tempura that keeps well into days.