The Hand of Faith nugget is unbelievably huge. I've found a number of tiny flakes so small they are hard to pick out and hard to see in the specimen vial, but they are there. I've tried the snuffer, an eyedropper and the like while it is in the water, but a knife point or even a pin works the best.
Gold is a lot heavier than the rest of the material and it wants to stay put on the bottom of the pan. Swishing and rocking the pan at the proper rate and angle can tease up the smaller flakes. Also, I've found that removing the magnetite from the black sand with the magnet tool works best when the black sand is dry.
ETA: I've found the flakes after going down a foot and a half to the gravel bed. I think that I'll run the upper foot of sand through the sluice, then screen and pan the gravel. This way I don't have to deal with all that sand and I'll get a better idea of what is down in the lower deposits.
If I can find some flakes here, I should be ready to find something better in other regions like the Upper Peninsula where these local deposits originally came from due to the melting glaciers.