Thanks, this is the first year I've tried it. I won't say it prevents blight totally, but it keeps the rain off the plants and should delay it, at least until most of the fruit ripens. Last years' experience inspired me to regard rain as fatal to tomato plants. It's working well so far, some leaves and stems have been affected but i've only lost a couple of fruits that were getting dew dripping on them. I'll get a new picture up later.