Contractually CQFO are no allowed, I don't see anybody around here Captain wise flying right seat for any less than straight pay. Even straight pay is a stretch but for the extremally rare productive trip the math looks better.

Bach in the Regionals this was done but it required Captains to be right seat qualified. There was only a hand full where I worked which is why 150%. Our sister Airline was 200% at the time. TSA could scoot by with just a few. Go Jet not so much.