Not hand flying the go around because of a lack of practice ?
So in what case exactly would you
hand fly a go around again given the relatively rare occurence of GA's .... which leads to the said "pilot being out of practice"
Do you mean "let the A/P do it cause you -human- can't" ?
GA is one of the critical manoeuvres that saves your life. You should be able to manually execute it whenever needed. NO reason should excuse a pilot for not being able to do it manually.
For all phases of the flight where ground proximity is a factor, it's the pilot job to be prepared and skilled enough to take over automation immediately when things don't go according to plan