Sorry, relying on experience from the past.

I just ran into an issue where as of yesterday & today, everywhere I search in California, Oregon, Washington state, Arizona, and Utah, SOS codes are bringing up nothing other than Rodeway Inn and/or EconoLodge. Further east some Comfort and/or Quality and/or other brand properties are coming up in some locations, but only a fraction of the hotels that used to show SOS/SC15 rates (at least as recently as a few weeks ago) now do.

I wanted to see if it was just the SOS code I had been using or all the others, and I did a search, and found that most of the sites that used to list SOS codes (for example, a bunch of state farm bureaus) had either (a) stopped listing them publicly or (b) switched to corporate codes. (I did, however, find at least one other SOS code and it produced the same Rodeway/Econo-only results.)

So I guess they're not easier to scrounge any more, and even if they are, at the moment they're not of very much use (unless Rodeway is your favorite brand).

I'm not sure yet whether thiis Rodeway/Econo-only issue in the West is a temporary glitch or a change in policy about SC15 rates.