I'm assuming its some sort of retrofit job. Like you said, there is nothing at the front of the brackets to keep them from separating. Not sure how good of a fix it is, but like you said, its there, its going to stay there.
West Marine Affiliate Program
The J/30 Class Association has partnered with West Marine and is now a member of the West Marine affiliate program. You can support the J/30 Class when you make your West Marine purchases online. The J/30 Class Association receives a percentage of sales from your purchases when you click through from our website. Click the logo above and you will be directed to the West Marine website with a cookie that identifies you as a J/30 affiliate. You can also use any discounts that you may be authorized.