"If you have the fridge space, chilling the watermelon the night before will give you a quick chill on the margaritas. The ingredients are to taste, so add as much as you like based on your personal taste preference and adjust as needed for different sized watermelons. A watermelon about 7-10 pound will be a good size that will allow the beater blades from the hand mixer to reach all the way through and around the inside of the watermelon. If your watermelon is any larger, you might need to use an immersion blender with a longer reach or use the drill and coat hanger method. Watch the video on our website to see how we made these. Hand held blender works fine and you just have to blend a little longer if you want a more liquid texture. For the most smooth and less chunky results, we like to use our immersion blenders...."