Why can't you just remove the spawn delay in duel?

Make it so that one can spawn directly instead of waiting 3 seconds. Then the enemy does not have that time to get in position to spawn frag.

It's so easy to do instead of moving the spawns around all the time, and then they turn out to never work anyway. People will figure the spawns out eventually, so why bother.

Just make it possible to spawn directly and then it's up to the players to be smart with there respawns.