Follow up to the jumpseat thing, all 178 seats were full. The listing I made online Spirit's website as a OAL Jumpseat was still only showing as a non-rev. They made it clear that the flight was full. I mentioned being a CASS approved pilot, so the gate agent gave me a jumpseat form. I filled it out and got on (thank you to the crew).

For the future, if a flight is full, is it worth listing online? It just seems to make us a non-rev. If we jumpseat it seems like there is a paper form we have to fill out any way. What do you prefer? Do both methods? (I only ask because at some airlines, it's frowned to end up listing on a flight as both a non-rev and a jumpseater).