Ed, when you say "lock" I assume you mean prevent any future additions or changes. Even though the lineage may be solid, that wouldn't necessarily be a good idea, since new sources or connections, or other relevant biographical data might be found at some point. The best way to prevent others from doing any inappropriate editing is to include in the profiles all the same source info that was provided to SAR or DAR, and indicate that they have accepted the subject as a Patriot Ancestor. If you're still seeing the "trampling," it would probably be appropriate to call the member on it directly or file a Problems with Members complaint.