In a pot add brown rice and water. Bring to a boil, then reduce heat to simmer and cook rice for 30 minutes, or as instructed on package. Remove from heat and fluff with a wooden spoon. Then, cover the pot with dish towel and secure with lid until ready to serve. (The dish towel will help to keep the rice fluffy).
Using a melon baller, scoop watermelon into round balls. (Or, cut into bite-sized cubes). Add to a large mixing bowl. Chop peaches, tomato and avocado into bite-sized pieces and add to bowl. Finely chop onion and fresh mint and add to bowl. Gently mix ingredients with hands to combine.
In a bowl add the juice of two lemons, freshly grated ginger, tamari, maple syrup and sesame oil. Whisk to combine. Drizzle watermelon poke mix with enough dressing to lightly coat, reserving the rest for serving. Scoop rice into bowls and top with watermelon poke. Drizzle with remaining Citrus Tamari Dressing.