Northstar Trailers SPORTSTAR II - Manual (Page 4)

This trailer requires inverted assembly. (Assembled upside-down). Start by turning
the trailer frame upside-down so the trailer deck is facing the ground. Use a table
robust enough to support the weight of the trailer frame and high enough to elevate
the frame to waist-height, or place the corners of the frame on buckets, or use
sawhorses to elevate each end.
CAUTION: This trailer is heavy. More than one person is required to flip the trailer
frame and assembly this trailer. Personal injury may occur if you try to assemble this
trailer alone.