Anti-rotation for removable jack

I recently purchased a product that enables you to remove your trailer jack while hauling your trailer. The product prevents you from bending the jack and enables you to open your tail gate without hitting the jack. When I first used it and I went to move my trailer the jack rotated a bit and almost dropped the trailer. I realized that if there was an object of the right size and shape it would prevent the jack from rotating when I didn't want it to. I measured the space and designed the anti-rotation piece in tinker cad. I printed in PETG and 50% infill so it is sturdy. Works great and I don't worry about the jack turning when I don't want it to. It is easily removed so the jack can be rotated and removed as intended. Use supports from the base and you should be good to go.