For shrimp: combine shrimp and margarita mix in a large bowl or gallon-sized plastic bag.
Marinate for an hour.
Then, place 4 or 5 shrimp on soaked wooden skewers.
Grill for 2-3 minutes on each side until pink.
When cool enough to handle peel shrimp.
To make the avocado and mango salsa: combine mango, avocado, jalapeno, lime juice, cilantro, and pickled red onion in a medium bowl. Taste for seasoning. Add salt and pepper to taste.
To make spicy slaw: In a small bowl, combine yogurt, lime juice, jalapeno, Sriracha, cilantro, salt and pepper. Add Cole slaw mix into a larger bowl and stir in yogurt mixture.
To assemble tacos: warm tortillas on the BBQ, on the stove in a skillet, or over a gas burner.
Add ΒΌ cup of spicy slaw, add 3 shrimp, top with mango and avocado salsa. Garnish with cilantro and pickled red onion.