The mechanics would indicate that a lower nicking point would be used if shooting split with an even tiller to get some power into the lower limb. With a longbow, I cannot tell the difference, all of my bows are less than an eighth up to one eighth up from level. We had a shorter recurve that was really asymmetric an older Darton. That bow required a higher than normal nocking point. It was with that bow that I discovered the advantages of the 3rivers feather rests. My wife shot it split, even though the nocking point insisted on being in that three under range above level. With a shorter recurve, a lot will depend on how blocked and rigid the release fingers are on the string. some, like me tend to shoot with the fingers hard, while others tend to taper the release fingers more.