I enlarged the hole on my 1/4" foot with flange. I used a round file, available at Home Depot or Harbor Freight. I found even with the single hole throat plate on my machine I can move the needle 1 place to right or left without any problems. Unfortunately I can't enlarge the hole in the throat plate.
I have a Pfaff with the IDT so there aren't any drifting problems.
When i use my FW I use my left hand to hold the material, with the thumb before the fabric goes under the foot and the rest of my hand for the fabric behind the foot. My hand just automatically goes into a rhythm so that it all works well.