I initially had troube with this in the Piper Arrow. I found it helped to come in a little high to get the steep approach angle and with power to maintain the approach speed. This way, as soon as you pulled the power over the threshold you dropped due to the reduction in prop wash over the wings. Previously, I had a low power setting and glided in, I was always fast and floated. Like was previously stated, airspeed control is the key.