RE: ama requires but doesnt support
There is a bit of difference between an established certification program (the Turbine waiver requirements) and a non-exixting basic pilot certification program.
If your club has its solo certificate program established in writing, you have a definitive way to measure if the guy can solo.
If you didn't bother to put it in writing, you have to muddle through with the guy and try to get him soloed... You use some discrecion as to how unsafe his flight gets before the backup takes over. (just like with any solo... if you don't have an instructor backing them up ready to grab and prevent injury accidents... not bright.)
Maybe he'll suprise you and do OK.