tntsmith,
I recreated your report via the "Start MAPS" option and experimented with varying antenna height and location.
This is the report for 70 (!) feet, where the Madison stations finally start to come in. Between distance and terrain, you're options are limited
I think you're looking realistically at three scenarios:
1) Get an antenna like the Antennas Direct DB 2 or a Channel Master 4220 for mounting on the camper to get the two low-power stations
2) Get a high-VHF antenna like an Antennacraft Y10-7-13 or a Winegard YA-1713 and mount it between 10 and 20 feet. Be able to aim at 3 or 315 degrees for ABC/NBC/CBS
3) Go nuts with a huge tower and a $118 Winegard HD 7698 (so you could get fox) or a UHF-only Antennas Direct XG91 for half that (for all the others).
The antennas in options 1 and 2 are about $40. Frankly, I like going for the VHF stations (option 2), as they will peneterate the trees much easier.