Our problem is similar to the homeless problems nationally: Mentally ill, substance addicted, rural in-migrants & under-educated chronically unemployable are the bulk of our park dwellers & homeless. Some are decades old cases who have either been ignored, cast aside or have avoided treatment by appropriate agencies.  Others are- sadly -  new youth with only older homeless as daily role models.
I support rapid response by community service patrols/police to clear the parks - for at least moments at a time. But CHANGE takes a larger perspective.  I'd prefer to see minimal-cost, sponsored & "controlled" year-round homeless camping areas in our City - jointly managed by the Muni and by the homeless themselves. Provision of a scheduled mobile meal-prep/delivery van; lease-purchase of a mobile military/emergency services showering unit; use of an on-site motor home as a center for various social services personnel to "do their thing"- ALL could begin profound improvements to our situation.