Duh, put the blanket down, fold one side over the poles, then the other over the poles... The weight pins the blanket to its self...
It's been billed to your credit card, enjoy! Your order: https://www.amazon.com/Tipmant-Sensor-Control-Simulation-Flashlights/dp/B078ZSJTFJ/ref=sr\_1\_1?dchild=1&keywords=yellow+frog&qid=1629850205&sr=8-1