Re: New search engine for sailboats
I just added the "Dulicate Match" state, along with "Hide 'Duplicate Match' results". So if you see a duplicate match, select Duplicate Match which will hide the boat from the results. If you ever want to see all boats you've marked as duplicate, uncheck the "Hide 'Duplicate Match' results" and they will show, which would allow you to unmark the "Duplicate Match".
@Jimgo: I think that automatically grouping duplicate boats as you suggest would be the way to go. A naive "model + location + price" exact match should be pretty good (e.g., how many exact same models of the exact same year and price will be selling at the same time? not that many I'd think). Adding to the todo list.