We tried Turnbacks in the Hawk. With plenty of energy and hight, sometimes they worked, but you needed to know what you are doing. But I have tried them in the Bulldog without much success. The problem being that by the time one got to 6-700 feet, off a typical GA runway (just say 1000m), one rolled out at about 300 feet with a mile or so to go. Operate of a long military runway, with a good headwind, one reached 700 feet, still over the upwind end. OK, groundspeed high on the glide back, but doable. That might work in your favour. Interestingly, with little energy in a Bulldog one still needed a 45 deg bank turn to turn back, and that lost oodles of hight and one had to push the nose way down to stop a stall in the turn. God knows what would be the case with a seized engine as apposed to a windmilling
Basically, the advice is 'in a light aircraft, don't bother, land straight ahead. Better to go into a hedge at 10 knots that spin in, trying to stretch the glide.