Great job on a really handy attachment. Around here all the orchard farmers including myself have basically a bigger version of what you made referred to as a buck rake. It’s main function is Pushing prunings from trees that have been piled down center of rows out to a big burn pile. Angle the rake down with just the tips riding on the ground so they slip under the brush and down the row you go, can move a mountain of brush in a hurry. My rake just quick slips over my front forks a chain holds it on and very importantly supports the load from bending the forks. I also use them to haul stumps /roots. For me they’re indispensable for moving a large volume of debris.