I've been using the tripod mount from Hoodman that's custom made for DJI controllers. Have used it for months and it makes a HUGE difference in my ability to do steady flights and video because you're not trying to balance the controller and a heavy tablet while manipulating the sticks. Attaches to any tripod that has a standard 1/4" screw mount. It's been a great investment. See the link for more views of how it attaches.
Link: Drone Controller Tripod Mount for DJI - HDCMDJI
View attachment 89795
I, too, had a Hoodman bracket. Until I stumbled upon this while cruising Instagram.