I have hunted for indian artifacts for over 30 years now. If you are in a wooded area it is hard to hunt because of ground cover. Look for washed out places or ravines cut into hillsides where artifacts may have been uncovered by rain. Also in my part of the country, South Ar., look for armadillo holes as the little buggers will move a lot of dirt. If digging is permitted where you're at (Please check out all laws on this as they differ from state to state.) do a test dig. I do a test dig with posthole diggers. You simply pick out the most likely looking places and dig down about 2 feet. Deposit all dirt in 5 gallon buckets and take it home where you can place it in a sifter and use water hose to search it. Keep and catalog all flint debitage, fire rock, broken pieces of pottery, etc. If you took your buckets of dirt from several different places on the site, you should be finding enough evidence to show you where to dig. To do a controlled dig just string you off a 2 feet wide ditch and start across your most productive area. Also there will be a waterway close to your site. Don't overlook the potential here. If it's a small creek with rocky bottom, simply walk and wade and look for the artifacts on the bottom. They will be there. If the creek has a mud bottom with dingy water, still look all washouts and bluff banks for artifacts washing out. You can also make a screen on a pole and seine the bottom. This is a quick overview but hope it helps.
Boy if my teachers could see me now they would be truning over in their graves 
In researching this area I have seen some clearings(using terra server maps) , not sure if this is nature or a place that was once used. Guess I got to check them all out.
