Flopper stoppers are better. We had our original copied in Mexico and made out of SS. The original was plastic coated mild steel that had started to rust. I can't really bitch about it because it lasted almost 20 years. I wouldn't leave the slip for a weekend without them. There is absolutely no way I would go cruising long term without them. We may look like a tuna boat while at anchor but we arn't rolling around in our bunks and stumbling around in our cabin. Hugely important items.