Basically the title says it all. Auto-enable hydraulics upon joining the ctf and when respawning, it's a pain (not really but still) to type /hyd each time you spawn!
Using /hyd in CTF is a huge advantage. You can even shoot people who're happily flying from a ramp or annoyingly camping inside a tunnel when you have hydraulics on. Not many use it but that's probably because they don't know that hydraulics can be enabled inside the minigame..This is the first time I've heard that anyone uses /hyd in CTF.