There is only one by-way for traffic within the new forest boundries, it's a mixture of broken tarmac, gravel and a mud section you would have no probs with, i took my freelandy down earlier in the year and it was ok. It's just off B3078 and B3080 junction at hope cottage o.s. 184 226167, some good ones to the north of the new forest and salisbury not far away plenty there...