There's a sure fire answer. Don't miss. Practice closer and get your form down to a Tee. I break a lot of arrows hitting them with another arrow, but I lose my share. Probably 1/2doz in the last ten years. All part of the price of having fun.

On another note you can dip them in FletchLac, but a newer way is to use arrow-wraps. Lighted nocks are also nice if you want to spend $10 for each one.