Dukes Covert nr Grantham was good! From what i remember, Shacklewell Hollow on the Rutland/Lincs Border near Stamford was really good, nice woodland, and the warden, Derek, is very keen on it being used by backwoodsmen/bushcrafters. Been driving past it for 5 years lately and never see any1 go in or out really. so not over used. Birch Hill Plantation (Scarcliffe Woods) is a maybe i would have thought, think thats Chesterfield. Stonepit wood in Gotham near loughborough is a very back to basics site. that might work!