Place your lobster in a pot of rapid boiling water (heavily salted) for 10-15 minutes or until tail has a nice pink/reddish color and has curled. Drain, run under cold water and set in refrigerator to cool.
Place sliced bread on a cookie sheet and toast in the oven for 10-15 minutes or until well toasted. Wrap garlic in aluminum foil with olive oil and place in the oven for 15-20 minutes until the garlic cloves are soft. Set aside to cool.
In a bowl, combine mayonnaise, roasted garlic cloves and chives. Mix well.
Remove your lobster tail from the refrigerator. With pairing scissors cut the front and back of the tail lengthwise and remove meat. Set aside.
Remove the crust from the toast and cut into points (triangles). Dab your herbed and garlic mayonnaise on the toast in the center. Slice your lobster so you have a nice hearty piece on top of the mayonnaise. Place a piece of arugula on top of the lobster and finish with a dab of caviar.