28-30ft fifth wheel boondock/campable in public lands?

FS/BLM offices in the area you are interested in can be very helpful. Case in point we were to go camping with grandkids in a forest service cg out of Lewistown, MT My fs book said 20 ft limit for length. Well the beast (5ver) is 33 ft and tall. Called the office in Lewistown and the lady there gave me nearly a mile by mile break down of the road in and the campground. All back in sites. We went I got backed in ok so I wasn't the days entertainment. And we had an awesome time.