If you make a square tarp, would it work to have the seam go corner to corner or would that be too much stress on the seam.

I found some coated material at my local Wally World, but not enough to make two tarps unless I can take the seam corner to corner. That seems(haha) inadvisable.

There's about 10 yards 60" wide. I need at least one tarp. Would like two. What's the most efficient way to use it?

Thanks.

Jbo