Try looking at some other club sites. I found the MG Club supplied a spanner for a 2-eared spinner when I had a 4/4. It was made from steel and had a good length offset handle. I sold it after no longer needing it for the next Morgan. I can't remember if there was a plain octagonal version though.
I was very lucky in picking up a "Lionel" version recently from someone here in TM. Makes taking the octagonal spinner off and on so much easier. I have a breaker bar but can slip a steel tube over it to extend it when I get older and weaker! A couple of taps with the basic flat spanner to double check tightening and all ok.
