I am looking to build two scoreboards: One for softball only / One that has baseball on one side & soccer on the other side. Both will use number plates (have made by sign co.) I have looked for different designs but no luck. I was going to weld a 1" by 1.5" square tubing frame (total size of 4' by 10' / I have found 4'2" by 10'2" White Alum sheets from a truck trailer body repair center) The scoreboards will be for high school sports only. I am building & paying for this project myself so any help in design will be great! The sign co. has look for a design layout to do the job but has not found any but the electric setup. Thanks for your help.