I'm building a new 16' metal decked general purpose trailer. I will usually have bolted on sides panels for general purpose work. Occasionally I will transport the 1025R tractor and want some good tie downs. I was going to have the lower 4" board on the side panels be hinged so that I can lift it up to run the chain through to D Rings on the sides of the trailer. I didn't want the D rings on the floor of the trailer because they would sit above the floor somewhat (Even the so called flush mounts stick up a bit) and make stacking things in the trailer somewhat awkward. My son asked why I don't weld Banjo Eye Plates into the floor of the trailer like Rollback Trucks do for transporting vehicles. I would be using these with 5/16" Tie Down chains. It seems like a great solution but you don't ever see them mentioned. Do any of you have experience with Banjo Eye Tie Down Slots and if so can you tell me the disadvantages?