Nicefu not spaming... I go there as there's 3 entry points to the base I can cover, (left, right and the pit where we spawn but the enemy usually comes from there as well), I drop a combo on each, and move to the next spot.
when I drop a combo to the pit, if my mates are spawning there they get pushed, but it's usually towards the stairs and should make no harm nor interfere with attack or defence). it's not spam... it's one combo.
Also from that spot, if the enemy evades me and get the flag, I can see which way the enemy goes and take a shortcut to meet him..
I find it very effective..