I'm surprised that the Crocket doesn't have the eyelets.
I've mounted a rack on my old Colnago years ago. It has Campy style rear dropouts which take a Blackburn adapter, and then P-Clips at the top, and the rack is as secure as any rack with eyelets (except for the slight angle in the fit, which I may fix sometime).
Anyway, if I was buying a new bike, then I'd get one with the eyelets. However, I wouldn't stress over it if I found a good used bike that was short the eyelets.