Well you have and you haven't....
So I haven't been clear. I have a share (it's a great share) in a small C150. Shared with 12. It's a greatly little piece of kit and it is from a relatively small grass airfield. I bought it, because it's cheap as chips flying. Now the relatively small grass airfield, is well a relatively small grass airfield, and I am use to a big concrete airfield. Last year, I didn't have a great year of flying, with weather, work, motivation, and to a lesser extent availability.
So I ended up doing about 3 check out flights and not a huge amount of meaningful flights of my own (some, but not many).
I have now just completely 3 hours with an instructor at a different field, (big and concrete; not waterlogged; and they were available at short notice...) I would quite like to jump back in the C150 at the relatively small grass airfield, but I don't feel particularly motivated to sit in with an instructor for another 1.5 hours, so I wondered what people thought of the interpretation of the rules could be... I am just interested in views, I shall most likely go up and speak to the clubs CFI, and I suspect I know what the answer will be - 21 day flying from the club... But that in itself has some interesting implications...
Hope this is clearer, possibly not...