OK, wife's back in town, heres how she does it
First the background - this taco joint
http://www.surftaco.com/food/food_tacos.html rolled into town a few years ago, and their fish tacos were so good we set about trying to duplicate them. I think we finally nailed it. The secret is the sauce:
Sauce:
1 C mayo
1/2 C milk
1 tsp finely chopped garlic
juice of 3 limes
chopped fresh cilantro
Mix it all together and chill to blend flavors
Tacos:
fried or grilled fish (mahi is my favorite)
shredded cabbage
pico de gallo salsa
avacado
soft tortillas
wrap it all up and enjoy