i would agree with roger there. if you are having trouble, just concentrate on the carve and foot change first. Let the sail pull you over, then let go of the rig early and then carve all the way around, then collect it again on the other side.
As for planing jibes, i have yet to get one. I have trouble trying to flip the sail after the carve. it seems I can't sheet in afterwards some of the time. I sometimes even have to just pivot the board more upwind to sheet in, which I don't understand. It mustbe some mental block, because somtiems I get them, other times I don't