邬先生, missionaries are the perfect FTs.

Missionary FTs will not identify themselves; they fear godless China.

Missionary FTs are not in China for money or comfort; the are here to bring the Word to heathens. They will never complain about salary or accommodations.

Missionary FTs either bring their spouse or they are still saving their sexuality for marriage. The will not seduce students or spend weekends in Pattaya.

If missionary FTs complain about anything, you can always threaten them with exposure and deportation.

Consider placing a recruitment advertisement on www.breitbart.com. All your respondents will be missionaries.