I would honestly do the same thing in your situation. There's not many places that are fenced in around us.. tennis courts, fields etc. One's that are, are locked. But now we have a fenced in yard so we don't have that worry. We recently started going to low key undeveloped industrial parks (you could also go when buisnesses are closed), wrapping the dog's 30ft leads around our waste and just walking. Of course you could do a longer lead and play fetch etc.