Sorry I've been away a few days.
The foot forward is just before you transition your weight to the new foot. It's part of why there's an appearance of an "A" frame.
It doesn't matter what skis you're on. Think about moving both feet at the same time and tipping both skis at the same time. There appears to be a projection forward of the uphill foot followed by a transfer of weight then tipping of the downhill foot. Try activating the kinetic chain with the little toe of the downhill foot while your feet are "side by each"
That way the shins stay parallel as the downhill foot leads the uphill one into the new turn. You need to have both feet underneath you for this to work. If the uphill foot gets ahead it's out from under you and it won't roll over, leaving you in the backseat.
As for the plates, don't you have to grind the top of the lug parallel when you use them? Once that's done it's hard to go back. That's why I suggested trying to get pretty close before you do anything permanent to the boot. If you put the tape on the boot sole (and use Cat Tracks) it's pretty durable. I had mine like that for a whole season before I got around to making it permanent. (shoemaker's kids thing you know