Get a Ghillie suit...I have a few Ghillie suits, depending on what I am doing...but when used properly...you just dissapear, and someone could be standing on you, and they wouldnt know it.
Ive got this great Urban one...really blends you in with roof tops etc..all hand made...fantastic bits of kit.
Was once posted up, waiting for some deer to wander alonga valley....im all Ghillied up...so is my rifle...im in about 2 foot high grass...anyway...a young couple come along ( shouldnt have been there)...and start fooling around in the grass, around 8 feet from me...im quite happilly watching...watching the deer etc...when they were almost done....I stood up....funniest thing in teh world, watching two naked people...absolutely **** themselves with fear...
I told em to ferk off, coz tehy shouldnt be there...tossers...