I LOVE standing ab work, always have. And I love that so many instructors are incorporating it. I do so much general core/ab work from these my dvds like Turbo Fire, any kickboxing dvd, Kelley CM does lots of standing ab moves, that I don't feel as guilty now when I skip parts or all of the ab work at the end of dvds when I'm just too pooped to do them or out of time. I still like to get in some floor work, but I only do the ones I like or can tolerate now.
I have heard a lot of talk that women are kind of losing their waists due to trends in ab work, and I have noticed that in the physiques of instructors and background exercisers, like Chalene and Jackie Warner come to mind.
Honestly if I could get my mid section ANYWHERE near them, I don't care if I have a waist or not!
Oh sorry, just read your original question, I don't think I have any tips per se, I am an apple too, but I love that even under my fat, if I stand straight or suck it in a little, I can see the formations of abs in there. I definitely attribute that to the Turbo Fire rotation mixed with KCM dvds I recently did. I burned out on TF at week 10ish, but have continued with dvds like Kelly Coffee Meyer and Michelle Dosois Peak 10 dvds, mixed with a variety of other cardio, mainly kickbox and hiit.