The key is knowing how to produce a burr on each edge. What you do in the first stage of the sharpening process determines success or failure. I prefer to keep it simple . . . with equal pressure applied I push the head across a coarse stone until I feel a burr on the two edges contacting the stone, Once I confirm that I have established a burr the full length of both edges I rotate the head toward me and repeat, then rotate a second time and continue to place a burr on the final side. This "mates" the edges. At that point I push the head across the same stone (to remove the burr) 10 times with medium pressure, rotate toward me and repeat on each side. I do this again using 5, 3, and finally single strokes, using less pressure as I work the head. The final step involves pulling the head backwards along a smooth, hard stone. Once again alternating edges and using less and less pressure. I keep my stones extremely well oiled to "float" away the metal as I work the edge. Using this process I can have a 3 blade head hunting sharp in very little time. Once again, I do it by FEEL, never looking at the head as I work it.
Regardless of the stones or finishing technique you decide to use it's all about getting that burr established correctly. If you don't do that you're doomed to failure and frustration.