Regarding parking on the dirt, when I visited in early April the NPS had blocked off the last quarter mile or so before the rental docks at Bullfrog. One of the staff indicated that NPS was concerned about vehicles parked there leaking oil that would get in the lake when the water rose. I can understand that concern, but what about any oil leaks from vehicles higher up on the lake bottom, in the parking lots, anywhere in the Upper Colorado River drainage basin, and so forth? It might be a question of how long the oil will have to degrade before the water comes up to that level.