Scoot the idea tip done that way is something float rod (centerpin) guys have been doing for years. Basically the reason for it is because with a normal spin tiptop it makes the line go from the last guide to the tip at an angle. So with the tip being a guide like the other 7 guides before it, the line stays in the same plane from the 3rd guide all the way out of the tip top which equals longer casts, and less drag. There's no real problems with tangling to speak of when done with just 1/8" of blank hanging in front. If you put the guide too far back then there might be issues.