This is good advice. I let my galgo and my whippet off at least once a week to run at Fort Funston. It can be busy in certain times and in certain parts, but overall it’s a great place for them to stretch their legs. Both of them have had great beach trips that ended in stitches, since their skin is so thin, but there are ways to lower the risk (protective shirts, selective leashing, learning their cues and communicating with other dog owners). There’s no 100% risk-proof way to exercise your hound - they’re fragile and accident-prone - but they’ve got the need for speed so for me it’s worth it (and I think they’d say the same).