I don't know about that, Ultralights. If you don't often go out and do stall refreshers in XXX type, how would you know? The reason stall warning systems are put in aeroplanes is so the pilot gets advance notice of what is about to/may happen. If you know your aeroplane really well, fair enough, but if you don't or if it is a vicious bugger, then...
Turning onto final... even the experts get it wrong...