Do they make a single bevel 3 blade broadhead?

Red Feather Archery offers a 3 blade single bevel called the Phoenix. I've used them on turkeys with success but have had no opportunity on anything bigger. They shoot well for me , I like 'em.

We did have them made for about 6 years. We are selling off remaining stock at a discount. Now would be a good time to buy 'em. They are a great head, but I'm pretty sure my opinion is biased

How the heck do you sharpen them?

I do all mine with a file. They are actually really easy to sharpen and because the angle on them is closer to 35 degrees than the 60 degrees of a double bevel three blade they get real sharp. There is a video link on our homepage to a sharpening video.