I know things have changed "big time" but working a spare board wasn't that bad... You certainly gained a lot of experience early in your career. Any job any time... I spent about 8 years working the Toronto spare board.
CNR CP and ONR still had their own passenger trains along with all the freight assignments. I've been . Conductor pilot of just about every type of track equipment
(SRS 123) I wonder it that thing is still operational)...
The spare board protected all the work . Baggage cars.. Snow plows ..Weight freight ...Through freight . Even made a trip as a second engineman.
We always the opportunity to book rest at the completion of the trip. Up to 24 hours ..so if you had something you really wanted to do.... Book rest.... or as a last resort book sick...
Funny how things go ...My cousin who's about a year older hired on a year or so before me and stepped right into a regular assignment.