I have previously read other threads where there was general agreement that round tine rock buckets clear themselves better than the square tines. In my search, I found lots of square tines or bar tines, many with around 3 inch spacing, but not many with round tines.
Personally, I would not want any wider than 2 inch spacing for separating rock.
Might also suggest confirming what the max lift rates are for your SVL to determine acceptable weight for the bucket in your search.
Personal Experience:
I found mine on Marketplace, but it took a couple of months. It's badged as a "New Holland", although it's a rebranded Bradco. The guy had bought it new, but it was too much weight for his 30hp tractor to lift with rock in the bucket.
Rock is heavy, and my bucket is heavy...over 1000#. It's a beast and I can overload the MX6000, 60 HP loader with a full load of gravel on the 72 inch bucket. Llkely, your skid steer would not have any issues with the 72 inch bucket.
I can't confirm the effectiveness of the square or bar tine buckets, although after about 50 hours of use separating asphalt millings while building my driveway, the 2 inch spacing and round tines have worked perfect with very little material hanging up between the tines...and the Bradco is going to last longer than me...
View attachment 941093View attachment 941094