My method is to get the approach speed just right 75kts (flapless) 70 kts (normal) on final and fly down to a point I judge to be correct then
That seems a bit quick to me, my landings got much better when I flew a stable 65kts (flapped) on final - isn't the POH speed 63kts? I haven't flown one in a while though, so may be wrong. I tend to fly almost power-off once i'm on short final too, that way if the engine quits i'm still going to make it down. I hate the PA-28 habit (that I was taught!) of dragging it in from 500ft with full flap and plenty of power to compensate for being on the wrong bit of the drag curve...
When I was doing the IMC I just did flapless landings, one less thing to worry about when taking the foggles off and becoming 'visual' at 500 ft.