I had to say the worst I have personally experienced was a Browning fusion two cam piece of garbage. It was untunable and I finally trashed it. Didnt matter what you sdjusted it just rattled itself out of tune, was noptorious for bad cam timing and all around should have never made it to the buying public. Hows that for a bad review???
Here is a very handy and effective device I use to dispense corn with - but it could also be used to dispense any other seed or deer feed.
I had an old feeder that had a failed motor... I made a set of brackets to attach the feeder to the rear of the 4 wheeler - the lower one encircles the feeder and has a forward section with holes drilled in the outer ends of the bracket... these holes align with two 5/16" bolts that drilled into the rack of the 4 wheeler.
The upper bracket is an "L" shaped...