I 'built' something you might call 'hook on' or 'hang on' forks out of C-channel which is even sketchier than the cheap clamp on forks you can buy, but i still find it useful!
I bolted some front tow hooks from a Jeep onto a U shape of C-channel i picked up out of a junk pile which happened to have appropriate spacing for 'pallet forks'. Originally it was only supposed to be used with a 3pt receiver hitch frame with actual pallets with engines on them. The idea with the hooks is that I can back the threaded end of the 3pt pins under the hooks and pick it up or put it down without getting off the tractor. That DOES work.
This pic was just mocking it up. You can see the tow hooks and how they ride a sleeve on the threaded ends of the 3pt pins. Pins were facing that way because I bought the red piece for use with a garden tractor but it works just fine with my regular cat1 tractor too.
Anyway, at some point i got bold and decided to hang it on front of loader bucket just to move empty pallets. Then i got bolder and started putting more stuff on it.
Then i just kind of went crazy and so far the max i've had on them is 1000 lbs, but loaded evenly and all the way to the rear!
So considering these things don't even really attach to the bucket and if i dropped the bucket they would just FALL OFF, i'd say by extension that clamp on forks are at least this good but probably better, and definitely useful for the price. Im using some of the smallest loader tractors there are (kubota
b6100,
b8200) and i've still made a lot of use out of them.
Although since i have this silly thing that goes on a bucket AND on a 3pt, if i bought actual clamp on forks I'd probably try and find a way to make them work on 3pt too just because i'd hate to go backwards.
