They are deflected with WOW and throttles idle. Unless you use the emer stow switch.
Having them stowed gives you a 5% penalty in T/O distance. No penalty in LDG dist if I remember correctly. Mounted on CJ, CJ1 and CJ2. All the pluses and the 3 donīt have em as they have FADEC with lower idle.
Operated hydraulically. On a side note, there is a difference on how they deploy during startup, I think on the 2 both move, on the CJ and the 1 they move when the respetive engine is started.