Grilled Salmon BLT Clubs

Name: Grilled Salmon BLT Clubs
Ingredients: 1/2 cup mayonnaise; 1 clove garlic, finely chopped; Grated zest and juice of 2 limes; 2 tablespoons chopped fresh dill; 2 tablespoons chopped fresh parsley; 8 slices bacon; 1 1/4 pounds center-cut skinless salmon fillet; 1 small red onion, sliced; Kosher salt and freshly ground pepper; 2 tablespoons extra-virgin olive oil; 12 slices country bread, toasted; 8 leaves red-leaf lettuce; 3 plum tomatoes, sliced; 1 avocado, halved, pitted and thinly sliced