I fly off the edge of the board. A lot. Especially with AF2s.
I'm not sure how often it's happened, but more than "a couple" which is pretty embarrassing. It mostly only happens with AF2s, which is particularly troubling since a lot of people seem to run them at speed three all the time. I have a suspicion I'm not making enough use of the navigate command with its extra tick on the manuever tool.
So how often do you guys plot navigate commands for your ships? I know my friend makes a LOT of use of them for his VSDs, hauling the nose around to keep it on target.