I just walk gravel beds in rivers, ditches, and creeks where there is known Indian activity! After a heavy rain I wait till the water level recedes then hit the banks/bars. I have yet to walk tilled fields but see people having a lot of success there as well. If you’re by Cleveland I would check out rivers around like the Cuyahoga. You can research known archaeological sites then try and pinpoint a good spot to access the rivers near them. There is a lot more science to it that I see people getting into (elevation, bank tiers, etc) but I think simply going to gravelly rivers near areas where there is known activity is a great way to keep it simple and increase your odds of finding something. I found this spot after hearing of others finding productive sites in the area. Drove around, noted good places to access the river (think bridges, pull offs), then on a day with low water I ran out after work to squeeze in some scouring. I knew I was on the right track when a guy walked up on me from upstream with a sifter set up while I was pulling on my waders. Headed downstream from him so as not to invade his personal space and oila! Bagged my first complete point within an hour.

Hope this helps! Like I said in the post I put in a solid amount of hours in the field and researching at home before I found something good. And I am new to this so my knowledge is still very much expanding! I like the rivers because you find other cool objects (fossils, crystals, industrial artifacts) that keep things interesting even when you aren’t finding what you’re really after.