Increasing pitch is not likely to help. It will add more thrust at idle, but you could just as easily add more throttle if that's what you needed. I suspect it is just part of the learning experience. Very few of us can land really well in a 15 knot wind. The planes you mention are pretty lightly loaded - so they don't stall until the airspeed is pretty slow. With a good headwind, the plane still wants to fly even though it appears to be going slow. Try slowing down even more - closer to the stall point - before you touch down.