I have a couple of hand made knives that I like, they have blades made from a file and sharpen up real easy...I pull them out when we have 4-5 to skin, so I don't have to stop and sharpen while skinning...

But, frankly a good Buck is all you need...Last night I skinned and boned out a deer for my buddy with my Buck pocket knife that I carry year round...
It's a drop point and the blade is only 2 1/2 inches long, it's really all you need...

Most inexperienced hunters actually use a blade that is too long for skinning...A 2 1/2 - 3 1/2 inch blade is all you need for deer...