For a friend I built a FEL 'clamp on' trailer mover for his bucket.
For stability I made it 6 ins wide with 2 T handled clamping screws.
Knowing how he tends to abuse most things I made it very HD using 3/8" plate stock and thoroughly welded.
(he still managed to distort it)
Sorry, no pics, but I'm sure U get the idea. (look up 'clamp on forks')