Cut thin horizontal slice from bottom of watermelon so it will rest evenly; slice watermelon lengthwise in half. Carve a decorative zigzag edge from sliced edge of one half of watermelon; scoop out fruit to form a bowl. Scoop melon balls from second half.
Fill bowl with watermelon, honeydew and canteloupe balls, pineapple chunks*, strawberries, blueberries and any other fresh fruits in season. Pour Aloha Sauce (below) over fruits in bowl; toss lightly.

* To cut a pineapple into chunks, remove top; cut pineapple in half, then into quarters. Slice fruit from rind; cut off pineapple core and remove any "eyes". Slice quarters lengthwise, then crosswise.

Aloha Sauce:
Mix 2 tbsp. each strained lemon juice, lime juice and orange juice, 1/3 cup water and 2/3 cup sugar.