You can download them for free.To the OP rather than whine about how unfair the world is to you, you could go down to the local forest circus, burrito of lawn maintenance office and BUY a map and look for the crossed pick symbol that marks the spot of a pit or gravel pile. Heck maybe you'll find your own super secret shooten' spot or maybe we'll be reading about you in the funny papers after the spring thaw.
Even shows the locked gates.