Why did he ask for short-term loans and promise to repay them in as little as 30 days?
He should have just asked for outright donations, telling them the money was needed to do God's work, and that it would earn them blessings and be returned to them multi-fold by God in the future. This wouldn't raise many eyebrows, I see evangelists say it on TV all the time.
A few months ago I watched Benny Hinn tell his audience to put gifts to his ministry ahead of their house and car payments. He said if they were generous to God (via Benny Hinn, of course), He would eventually take care of all their needs. No doubt some of those morons are having their homes foreclosed on now.