I have a Ratchet Rake which attaches to the bucket with steel cables around the bottom of the bucket,
then uses belts and ratchets to provide tension. The Ratchet Rake is a good tool and relatively cheap at $299 / 60" at Tractor Supply. The Ratchet Rake attachment has been 100% secure as has the clamp-on attachment for my Payne's Aluminum Debris Forks and the clamp-on attachment for my Bucket Solution's Bucket Spade. However it is less complicated to simply screw down two clamps than to wrap around the steel cables, then fiddle with the locking mechanism on the belt ratchets on the RR. Both the clamp-on attachments have fine thread bolts and it is simple to tighten them down.
The Ratchet Rake is
compact and weighs "only" 60 pounds or so, so you can manhandle it onto the bucket fairly easily and ratchet it tight.
The aluminum Debris Forks weigh about the same but are bulkier = more difficult to wrestle on to the bucket but still doable. Plenty of hand-holds. $800 plus freight.
The Bucket Spade is 110 pounds and a bear to wrestle for me, at age 64; however for me it is an occasional tool which I use less than the RR or Debris Forks. The weight is a primary factor why Bucket Spade is a good "digger";
I would not wish it lighter. I store the Bucket Spade on a Tractor Supply pneumatic wheeled garden cart which has a bed about 14" of the ground. I position the cart then move the tractor to the cart/spade then position the bucket so I limit the amount of wrestling I have to do.
All three tools discussed above are easier to attach than wrestling the PTO drive onto the tractor PTO stub from a PTO powered implement like a PTO
chipper or PTO powered Bush Hog. PTO connections are never easy and some days are a bear. Talk about wrestling!!
So, don't let the attachment method be too high on your priority list when considering bucket tools, as long as the attachment method has proven secure. Ten years ago, when I was stronger, everything seemed to go on easier. Now I have to use more technique and less brute force. But I still get 'em on. So will you.