I made a pair of 'clamp on' hooks, though with version 2, I'm using a 3' length of electrical channel. Clamps slide on channel, channel slide into bucket, hooks slide to left/right edges of channel,tighten bolts..done.
I didn't have the heart to cut/drill/weld the bucket.....
Mine are similar to the BXexpanded ones in B737's picture, just a LOT cheaper. BX ones here, would cost north of 300 Canucks. If I'd bought new hooks and new steel , less than $40. As it was, I just used scrap laying around.Sad thing is you'd never know.....the pile never seems to go down.