This is the experience that solved my problems with scoring/getting those ears on my loaves.
There's lots of good info in this site about when, where, why and how to score; you can read it all just like I did.
But if that doesn't do the trick, here's what made my score something to roar about:
1. Double-sided razor blades, still available in a easy to handle cartridge at some pharmacies.
2. Break them in half lengthwise - now you have twice as many.
3. Employ them easily, safely, by hand. SCORE!