I hired a pvt forester to cull 20 acres. He picked out the trees with game mgt in mind ie keep the mast producers like oaks and hickorys and cull the maples pines swamp oaks (red) and others that made room for the ones left. He wrote the contract visited the site during cutting and acted as my eyes and ears. Result: they vastly improved the mast production on the property, they ended up suring up the timber roads, putting in culverts and some shale and I got $5000 to boot. If you are doing it just for the money its worth having a forester because they know the value and they know who and what to look for. If you are doing it fo game management a forester will know what trees to keep and make sure the logger doesn't just take the cream. They also make them cut trees down and grind or cut them up and mine even removed the stumps and refuse as well.