What Soundguy said. There are two kinds of backhoes available: 3 point mounted and subframe mounted. It's generally better to have one attached with a subframe because it's stronger and doesn't put as much stress on the tractor. It's also safer. Using a backhoe involves all kinds of lifting, pulling and twisting forces as you operate the bucket and swing the boom. Neither the 3 point linkages nor the tractor itself are designed for such forces, so with most backhoe setups, having a subframe acts to carry those forces directly to the backhoe stabilizers and the loader bucket. If you have knowledge, resources and skill, it's possible to build your own subframe for a 3 point type backhoe, as Soundguy did; the rest of us usually buy a subframe type backhoe if that's what we want. All that being said, there are lots of 3 point type backhoes, which can be OK for light duty use.