Pinion Snubber or not?

I have a old mans sleeper with the stock springs and added a set of old Lakewood traction bars for the look. Tell you what the darn thing goes straight on the launch. I friend of mine who is a old dodge guy was explaining to me not to use a pinon snubber because it can be a pivit point for the rear end movement. Makes some sence to me but can also see the benefits of a snubber also. Just my 2c