Hmm, maybe we need to get a deep fryer... Have you tried daikon radish as a lo-carb potato substitute? I don't care for the radishy taste much myself, but I sometimes do it a roast veg, or put into @sift666's breakfast mince (which is cooked up in the crockpot).
I may have daikon radish and not know it yet. I'm still learning about all these lovely organic veggies. Either that, or it's not allowed in Australia for reasons. I'll keep an eye out for it, though.
Its not very common here either, but our organic shop has it sometimes.