VA,
Don't be afraid to learn how to sharpen. It's part of the traditional way. Some folks are naturally talented at it, for others (like myself) it takes a heck of a lot of practice and study. For me, sharpening my broadheads is just another step in the hunt. It's part of the preparation, no different than organizing gear, or scouting.
I am able to get 2 bladed heads much sharper than 3 bladed heads. That's what I've used. I WILL get to where I can sharpen 3 blades. It isn't really a matter of "I can't, so I just won't use them."
I tinker a lot. I love the tuning, building arrows, tweaking my setup just a teeny, tiny little bit to squeak out a little extra performance. Mostly of the year I am almost totally hairless as a result of sharpening my broadheads. It's one of my wife's favorite jibes.
You can do it brother, just keep it up.
Jake