Colombian Patacones with Shrimp

Name: Colombian Patacones with Shrimp
Ingredients: 2 avocados; 1 clove garlic (minced); 2 tablespoons red onion (diced); 2 limes (juice only); 1/2 teaspoon salt (or more to taste); 1 tablespoon cilantro (chopped); 1 lb. Argentinian shrimp; 2 teaspoons Basic spice rub (Recipe follows); 1 tablespoon avocado oil; 1 1/2 teaspoons Kosher salt (I use Diamond Crystal brand); 1 1/2 teaspoon paprika; 1 teaspoon garlic powder; 1 teaspoon onion powder; 1/2 teaspoon dried oregano; 1/2 teaspoon dried thyme; 1/4 teaspoon black pepper (freshly ground); 2 Green plantains; oil for deep frying (about 2 inches in a 2QT pot)