an ally on Miller told me, farming a spawn point is the next best thing after flying around
well i did find 3 on the same spot, but they spawned very slowly because of non-prime-time
actually the most stupid thing to achieve is the slasher directive, cause you have to wear a halloween helmet/mask, but everybody will shoot you then cause getting killed with masks gives points as well for the others
that's why i only go for the 200 cert directive and that's it ^^