See, the turkeys don't know property lines, their education was stymied before it got to there. However, they do know places and one of the types of places that they really know is where they encountered a perceived danger and if they really start to get a lot of perceiving at a certain location, they will forever avoid that location.
5 acres ain't much ground. You can't hold turkeys on 5 acres, not with anything. You can improve your 5 acres so that they visit that 5 acres frequently. I believe that you can hunt 5 acres; I mean how big is your butt? What you cannot do is allow the flock to start associating your butt, however so big or small, with the area encompassed within the 5 acres. If the flock starts to associate that area with danger, they will be gone, perhaps never to return.
It is not whether you hunt that 5 acres that matters, it is how, and how often you hunt that 5 acres; that holds true for your 5 acres or 5 acres in a 100,000 acre tract.
Why be good when you can B-Mobile or Spin & Strut.