If ever there was / is a case for ALL pilots to belong to an effective union, perhaps / preferably - the SAME UNION - then, IMHO, this is a 'prime example'.
Having been a Union Rep dealing with the 'F*^# you' attitudes of 'some', then I can heartily endorse the suggestion.
It worked for us, in our time.....
Think 'outside the square'...CPSU..? TWU..? Whichever can do the BEST for you...
Cheers