I've had some luck sharpening on carbide sharpeners, they are the only light weight option, but you will need a strop and rouge to finish the broadheads to be sharp enough. For home, I've recently bought a 1"x30" belt sander with some 400 grit belts and a leather strop belt. Check out the Accusharp from Magnus and Outdoor Edge makes a nice little sharpener but I can't remember exactly what it's called but seems like it's X-Something. Other than those, KME sharpeners are the Cadillacs of the Lansky type sharpeners but aren't light weight or simple enough to use while taking care of an animal in the field.