Anyone know of a good quality water proof blanket to fit a deep-bodied mini? I got a Glover and it won't reach to cover Katie's ample midsection, but the length is fine and I like the quality. She is built like an old style Shetland pony in spite of being only 34 inches tall and wearing a size 48 blanket. So her body is deep but short. I also need a blanket that is not insulated. Thanks!