With all due respect to everyone, I don't think that raising your nocking point should be the solution. It may keep the fletching off your hand, but it is not good for your tuning. There should be only one nocking point, the right one!
The reason I say this is that when you raise the nocking point, the effect is to lift the arrow off the shelf at the shot, which introduces another vector to the forces involved and complicates the whole dynamics of the shot. Your arrows have to be absolutely perfectly matched to each other to shoot the same under those conditions. It also messes up your spine requirements. A higher nocking point needs lower spine than a lower one. That's why you set your nocking point first, when you're looking for the right spine.
Been there, done that, found a better solution. Do whatever it takes to move the feather off your hand, but messing with your tuning is not a good idea!