The sliding tray works great. It stays in place and moves smoothly. You press down on the lever, which engages the front wheels and allows easy sliding.

This is one of my best (if not the best) purchases i've made from amazon! My only regret is i didn't buy this sooner. Love random amazon finds!

The wheels are so small that when you push down to activate them, the handle and the front of the unit scrape along the counter. After more than a month, it still has a strong chemical smell, akin to burnt rubber. The surface is such that everything s...  Read More

It rolls nicely but the ninja foodie grill flips backward when you open the lid. Also, the latch to release the tray is awkward to push down.