Snap! My conclusion is:......Don't grow as many
Thing is I grow my Cobra in two batches.....the first batch was 17 plants.... the second batch is 12 plants and these are only about 6" high at the moment so perhaps by the time they are ready I will have used a lot of what I have or I can find another source for the second batch.
But I have to say this: they are the best beans on the market by far in my opinion.
I don't grow runner beans as I find with these I do not have 'stringy' problems and I harvest equally as many per plant.