You would still use mTurk to recruit participants, so you still benefit from their filters for acceptance rate etc. You would just implement the survey (probabl

You would still use mTurk to recruit participants, so you still benefit from their filters for acceptance rate etc. You would just implement the survey (probably with some attention checks to weed out people who just randomly answer questions), and at survey completion you give them a code to submit to complete the mTurk hit. Then you would only accept the submissions that have passed the attention checks, and pay those mTurkers.