Truth be told, I don't ever remember having to perform a go-around that close to the ground to be in ground effect. IIRC, that's a half-wingspan or about 18'. I don't even remember practising those.
Most of the go-arounds at KCPS and other local (and some not so local) airports were at least 50' or higher called by the tower controller or myself. A miss was at least 200' or better depending on the approach.
I don't disagree with your loss of lift at slow speed, but I should have corrected myself as the flaps were brought up a notch at a time and not UP as I wrote earlier.
I do remember flying the aircraft in ground effect down the runway aways before landing it. The hangar and turnoffs were way down from the approach end of 30L on a 7500' runway. Gotta watch that Hobbs.
