Whitestone in Benbrook (SW Fort Worth) has a couple of nice practice greens and a driving range with unlimited balls that is included in their green fees or $15 if you just want to use the range. It is by far best place I've found to practice this off season, but it is a bit out of the way and to my knowledge no other course/driving range has the same kind of policy (outside of country clubs and memberships). Anybody know of something similar in D/FW?