I have to disagree with there needs to be a reservation system for certain trailheads. We are talking about 30 days tops out of 365 that it is a zoo, Weekends between late June and Columbus Day Weekend. The rest of the time there is no problem getting a spot. Last Friday I stopped by Lincoln Woods around 10AM and there were still spots open. Same goes for Falling Waters / Old Bridle Path TH.
Everyone on this forum knows getting to popular trailheads early is the name of the game, if FW / OBP is full you can go park at Cannon Tramway lot and hike from there. How difficult is an extra couple of easy miles along the rec path or the Pemi Trail at the beginning or end of hike depending if you choose to ascend or descend Greenleaf Trail from the tram lot?