I'm not lew, but I can still answer that question. Swapa can tell its members to withhold their services at any level from not at all to a full strike. Failure to comply with swapa's instructions will result in a worker being labeled as a scab. CM nor swapa have not indicated publicly what exactly swapa self-help will entail, but historically, pilot unions typically do an all or nothing (aka, nothing) approach.

There's too much gray area in a "don't pick up open time" or "don't fly on weekends" or "write everything up" approach. Too many chances for people to innocently make a mistake and cross an ambiguous line. Even in a full out withholding of services like EAL, it's possible for miscommunication or misunderstanding to result in "inadvertent" scabs (or people claiming to be inadvertent scabs).

Also, it's usually the best option to rip the bandaid off. Paradoxically, it causes the least operational disruption because by inflicting the maximum amount of economic and public pressure, so the time on strike is almost always extremely short.

Of course, ALL OF THESE OPTIONS ARE ONLY AVAILABLE TO US IN THE EVENT OF A LEGAL STRIKE ONCE RELEASED TO SELF HELP UNDER THE RLA.

I personally believe that the full withholding of services is the best path to both a quick and fortuitous deal while minimizing the chances of collateral damage in the form of inadvertent scabs.