I have a "rainy day bow" that set up with an elevated rest, rubber cat whiskers, rubber Selway quiver hoot, etc...nothing that will absorb water. I shoot 4-fletch 4" AAE "Fastfletch" vanes on the arrows and they shoot fantastic.
I did experiment with some different vanes and some of the cheaper & stiffer vanes didn't shoot well. But quality vanes shoot fantastic off the rest.
I love to hunt on the ground when it rains so I wanted something that will allow me to do that without worry of compromising my equipment or shots.