I am looking for a 25 foot leash for my English Springer, so he can run in park fields and such without being off leash. He is reactive, so he can't go to dog parks. Our yard is small. I found a lovely dog park when I was working with him with an empty soccer field on the other side, also found a few wild places...things like that. I wouldn't want any longer in case a dog showed up. Recommendations?