Most people do call outs.

but you always have people yell early pull. I had people complain who were coming over from other servers that we did not wait 8-10mins for the cross world train for an S rank to get over......

Once the mob is found I give it 4-5mins then I kill it with who ever is there. That is more then enough time for anyone in the world to get to where you are. People just always want to finish up a quest, fate, crafting first. Which is not fair to those actively hunting. AND Screw the waiting 10+mins on cross world people..