I made a solo trip out to the Tilly's Hill site N . California . Tough screening the ground was hard baked clay and had to scrape the soil a layer at a time . I may have damaged a couple on the screen breaking clods but found a few bird points and made my day .
Looks good to me. Can you take a bucket of water like a 5 gal size and drop the clogs into it so they would break easier out of the dirt? That way maybe more will be intact I don't know if you can or not just wondering.