Reminds me of trusting the zoomed in view on everything now.

14 trays is solid but the table legs are doing the real work there. Trays alone will always slide since they are smooth plastic on smooth plastic, so the bottom layer needs something with grip. Try laying down a few trays flat as a base first, then build the walls on top of that instead of starting from the table. Also, corner locking works better if you alternate the way each tray faces so the lips catch on each other.

Oh man, that reminds me of my neighbor's setup last summer. He had one Sungold that went absolutely nuts, like we were picking a bowl full every other day and still had more than we knew what to do with. Then the year before that he swore by some heirloom beefsteak and got maybe six tomatoes off the whole plant. Cherry types do tend to be way more reliable self-pollinators though, so you're probably right that jade_lane doesn't need to worry much. That said, if it's super hot out when they flower, even the good ones can drop blossoms. I've seen that happen around here in July more than once.