Why not have every rsv have one stretch of 4 or 5 rsv days per month strictly short call and the rest of the days for the month be long call? We all know at some point each month we will be on SC. Now you can bid which stretch you want and then you can plan your month accordingly.

For extra coverage the crew desk could build a few optional extra SC for the AM/PM for anyone who wanted to shoot for extra pay for an unused SC. Would that idea stick possibly for a low cost enhancement?