I recently bought a two eared spinner tool from wheelwidget@hotmail.co.uk and they do 3 -eared tools as well. It's run by Lionel Roberts, a very friendly retired E-Type enthusiast, who CNC machines them out of solid billets of aluminium. You need a large socket (32mm I think) and a breaker bar but no more need to wallop the spinner with anything heavy, which I've never been comfortable with. They cost about £50 and when I bought mine he had them in stock and I got it within days. Send him an email. This link has more detail :

http://franks4x4-morgantechnical.blogspot.com/2019/11/a-lionel-roberts-alloy-wheel-spinner.html

Chris