I'm not sure the type of hike to recommend. I'd need to know how long they want to be out and what kind of environment these people would appreciate. Hike in the Gunks tend to be day hikes in areas where there are more people around and in more \"developed\" terrain. I'm inclined to recommend that your friends head a little further north to the Catskills for some more remote hikes with stunning views. Don't get me wrong, the Gunks have beautiful hiking. But when I'm going for an all day hike, I head to the Catskills.