I always preferred dear Auntie Emma to heads and sandbags. At a robust 260 pounds and a mere 5 feet tall, she had a low center of gravity and minimal wind resistance. She hung on tight and didn't shift around like heads, and when it rained, she shed water unlike the sandbags. Had to give up using her in her declining years, though. She took up howling at the moon and it always scared me 'cause it sounded like a bearing noise.