What specifically is happening? Are you having trouble just lifting the tail or is the issue staying stable once the tail is up and spinning around?
For the first, just do it in reverse (flext that front leg and extend the back then lean way forward to pull the tail up off the gound. If the issue is the second, really work on shoulder rotation and make very slight changes to use your shoulders to create pivot of your board and steer that way. Since you are balanced on a very small section of the board with quite a bit of mass trailing behind, it will take some practice to keep that mass behind you.
One trick that may help is to start doing switch tail presses. You will be leaning toward your nose, but since your switch, it will still feel like a tail press. Also you can try nose pressing while switch since you are used to leaning toward your tail, only now it`s leading the way.
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