A roof is good, but if you want more light, you have 2 separate solutions.
Use clear fiberglass panels for roof. Kind of pricey but last a long time.
Second option is to use a tarp during snow season. If you use the light blue, or green tarps, they are translucent to a degree, and it does not darken the run all that much. Tarps will last about a year or more, but are low priced. The more expensive 9 mil tarps will last about 3 years, but do not let very much light thru. The heavy Vinyl tarps like used on trucks transporting goods, will last 10 years or more, but do not let very much light thru. They also cost significantly more. At that rate, you may find the fiberglass panels more within reasonable price comparison.
WISHING YOU BEST,,,,,,,,,,,,,,,,,, and
