A half-round trailer includes a supportive brace member that is formed from a substantially rigid member. The supportive brace member is connected to the trailer body. The supportive brace member structurally supports the trailer body, which is typically fabricated, at least partially, from aluminum or an aluminum alloy. The supportive member may include one or more arcuate or curved edges. The supportive brace member, in some implementations, may be free of any linear outermost edges when installed on the half-round trailer.