We sell dozens of these. They're made locally, but ship a lot of places. The two prongs near the bottom seem to work well in this area for the 4x6 rounds and 3x3 squares that are common here. For us, the 39" tines that go through the frame seem to work well. Not sure what's best if you're talking a 5x6 bale though. We don't have many of those in this area.

I would really recommend a guard if you are at all entertaining carrying two squares. That top bale can easily fall back on you. It's happened to too many people, who I'm sure are every bit as good operators as you.