They are incredibly simple. Paladin makes the simplest installation. That's the configuration John C mentioned. Off the bucket circuit with basic gravitational safeties and simple hydraulic safeties. If you can weld reasonably decent, you can do the job in a day, by yourself, first time trying.Not very simple to put one on it seems. Just guessing the hardware cost as much as the coupler or more. I found a used one but it's just the coupler. Better pass on it probably. Might look for a mechanical one.
Just remember one thing, soft pins in the bucket(s) hard pins in the stick. No exceptions
If it's working for you, that's great. Less expense. I've had issues where the hard pins snap when used in buckets with pin grabbers. It's only occurred 3X in my experience, but it has happened. The other issue comes where you have a more universal coupler which allows the coupler to slap side to side in the bucket webbing. The mild pins allow it to grab and hold the bucket in position. Water and sewer guys lose their mind over an inch. (At least around here) Last point is, a soft pin is like a third the cost of a hard pin. Your results may vary.What if I'm running hard pins in both? Can't imagine a problem with that.
If it's working for you, that's great. Less expense. I've had issues where the hard pins snap when used in buckets with pin grabbers. It's only occurred 3X in my experience, but it has happened. The other issue comes where you have a more universal coupler which allows the coupler to slap side to side in the bucket webbing. The mild pins allow it to grab and hold the bucket in position. Water and sewer guys lose their mind over an inch. (At least around here) Last point is, a soft pin is like a third the cost of a hard pin. Your results may vary.