I think it's too late, but (1) I'm not an expert & (2) maybe we'll have a good autumn. I eventually got reasonable crops off a couple of plants which were trampled almost to nothing in July 2008, but very late.
I have loads of green tomatoes, but none of 'em ripe yet. Gardener's Delight, Sweet Million, & one unknown, which sprang up on its own. Self-sown from a previous year, I presume.