I had a lesson today and my trainer says Rosie has a little rain scald on her back, just behind the saddle. I can't put rugs on her as she eats rugs for breakfast, but she is stabled most of the time until February now anyway.I think she was out quite a lot when she went away to be schooled though.What exactly is rain scald and what do I do about it? Anything?? It is imperative that she's hacked out now as much as possible, to reinforce her schooling, and the weather is somewhat unpredictable isn't it? Would one of these waterproof fluorescent sheets you see on the market be sufficient protection for her when we get down pours??Anyone any advice??