Only concern I have is if there would be play in the front plate, meaning it would bang around...? The bolts that are there effectively hold the bottom edge to the frame crossmember (well, the second skid has those U-bolts around the frame, and then the first plate bolts to that.) Without the bolts there it might need some shims or something???
Otherwise a very cool idea. Only other idea I had was to use very small U-bolts, the same way the other plate does, only to attach one plate to the other. That way there wouldn't really be a bolt head to snap, just the edge of a U-bolt (which I think would be harder to break, esp. if you could find Grade 8 U-bolts.)