Have you considered a stump grapple bucket? Our flat bucket is 54" and the c style is 72". I don't find one to be more or less useful than the other. They were made by Markham Welding (used to be on TBN).
New Stump Grapple Bucket Skid Steer Loader Tractor Attachment John Deere Holland | eBay
New Stump Grapple Bucket Skid Steer Loader Tractor Attachment John Deere Holland | eBay