The one I have has a really sharp blade on one side and the other side is a fairly dull blade....When I first started I used to try and use the sharp side but found I would cut through the hide too easily.... Now I just use the dull side of the blade to push the membrane (not cut) but to push the membrane down/off.... I do find it easier to push that membrane (flushing the coyote) when it (the hide) has time to cool off...