if you have a light bow like i have (DXT) you need atleast 6 ounces, ive even seen guys put 16 ounces on there. You need the weight for hunting in the wind, and it will keep you alot more steady since the bow is so light, if your bow is a little heavier you might not need as much weight.
My favorite hunting stabilizer is the fuze 7 ounce. I also use it for 3d, but my bow is mainly set up for hunting.