As long as you don't tip, you're fine
Bought this to recover from hip surgery for my six weeks on a walker.  I tried various ways to secure the tray to the walker but haven't yet found anything that works.  As long as the walker is flat and you don't push on the edge of the tray, you're good.  But when pressure is applied to the edge - it tips.  I'm making it work, just be mindful of the balance constraints.  I would imagine this is a foible for all of these trays, not just limited to this tray in particular.
Rating: 4 stars