How many lines can you honestly say you caught because of them? Remember that fat shafts can only give you 1/2 their diameter of an advantage which usually equates to around to 1/32".

I can honestly say I lost no pointstoday because of thin arrows.

I can also say that when I shot longer stakes in the past that fat arrow cost me more points than I gained with them.It takes more energy to keep fat shafts stable at distance than it does thin shafts.I shot a low energy setup and open class.

If you are looking at a 40 yard max with a normal energy setup,fat shaft might get you a point or 2.Especially when playing the 12 ring game.