I rattle quite a bit during the rut and have for years with success. If you want to constantly rattle in bucks, I have noticed that a smaller set of horns work better. They don't sound as intimidating as the larger ones do. Gasser is right, if you were a small 6 or even a decent eight, would you want to come dashing in to two 150's duking it out? I sure as heck wouldn't.

Funny story. When I was younger and starting my bowhunting ventures, I picked up a set of fresh 4 point antlers from last years deer at camp. Next archery season, there I was, putting on the fight of a lifetime with those "sticks". I couldn't hear anything for me crashing those little suckers together, but little did I know, I had an audience behind me. When I stopped, I heard motion right behind me. I slowly turned to see a huge 9 point staring a hole right through me at 30 yards! Well, I was as surprised as he was when he found out I wasn't two young punks trying to steal a little of his turf. He took off as fast as I could watch him and never seen him again till gun season. He is now on my wall.

Anyway, just an example of what I've noticed.

Something you might want to try is a rattle bag. They are very realistic and arent as bulky as real antlers. I use them now and they work like a charm.