In my experience it's inevitable that you make a track. You just have to make it look like an animal trail, and try to walk one foot in front of the other so it stays as narrow as possible. I walk on the edge of the wood line, until that's not possible, then I stay on the same thin path I create, trying to allow bigger vegetation surrounding the path to cover it if possible.
If your gonna do a serious grow, you'll have to get water to it. Unless your doing something REALLY BIG, like pumping the water from a creek or something, you'll have to pack the water in. So just make a single trail and use it everytime. Maybe have one going in and another one going out.
One tip I can give about reducing your "footprint" on any growing vegetation is to do all your preparing(digging holes, carrying in soil/ferts/etc,) in late winter which eliminates killing any new spring growth on your way to your site. That way all you have to worry about carrying in, when the season actually begins, is the plants and their water.