You can back a trailer up to the trap as the T-post spacing is ~6 ft., the same width as most trailers. If you’d like a narrower opening, simply place an 11th T-post when you assemble the trap (in between the seam post and its neighboring T-post). You can then disconnect the seam to allow pigs to exit the trap. When assembling, you’ll need to add a hooked cam strap to the top of each T-post at the breached section to hold the posts stable and add cam straps to keep the net wall attached to the gate T-posts.