Hello: First of all I have been truly busy doing my shops, sorry and to talk about making it full time yes you can. It can be done by getting with the right companies,signing with as many companies you can.I work with four great company dealing with convenience stores/ merchandising/ phone calls.
Yes they do discrimate with age at a lot of these companies with being a certain age, I know because I applied for several and that is what they asked you , your age/ size.
The company sucks that want you to do all this testing with you have to take at least three time before you can pass it for such little pay and they want you to jump through for them!
I enjoy my Mystery Shopping assignments and get great pay from $10-$16.00 depending on what I be doing.I get plenty of timein because I do both MS and Demonstration which is Friday-Sunday( 4-6 hours) weekly you just have to get out there and look.