I'm trying to figure out how to do the Argent dailies as intended, with everyone mounted up. With the new dungeon coming online soon, and Battle Before the Citadel being pretty deadly with four clothies on foot, I figure the time has come to do it right!

I usually run an FTL setup, but figure I need to suspend it while mounted. I can get as far as '/follow Osaar (the leader); /assist Osaar', which does what I'd expect. What I can't do is macro any offensive spells. '/cast Shield-Breaker' and '/cast Thrust' just do not work for me. Clicking the button on the vehicle bar is the only way I've found to make this happen.

Am I missing something, or are these just not macroable? I know some people have been multiboxing on horseback ... are they doing it with mouse replication? Is there a /click involved?