When using diamondplate, I thought the diamonds should be on the upper side so you have a smooth surface for the rocks to slide on. With the diamonds down, its more likely you will get hung up on something. I like the design though, good job!

96 T100 4x4 - 35's, 4" SL, 2" BL, 4.88s, ARBs, custom bumper & E9000 winch, etc.
99 F-350 4x4 superduty supercab turbodiesel longbed