I've used the survey method to stock my bag pretty well. I do them 3 or 4 times a week.
I'm 53, white, work full time, and i get 3 or 4 surveys to work all the time, the only thing I
did that made a difference was when I started checking " prefer not to awnser " on the
race questions. before I would get maybe 1 out of 10 or 15. Now I get 1 out of 3 or 4.
also time of day seems to matter too as some fill up fast. The best time i've found is
early afternoons. ( u.s central time). And last but not least, Monday's and Tuesday's
are best also. hope this helps and good luck!!!