just save your ss till last and just click set off 5 or 10 seconds before the end of the event then you will be fine and wont get plundered

never tried that jeremy you could try it but try it with another missions your first time to see if that works if i see alot of plunders on my server ill tend to get my ss then wait till the event is about to end then set off depending if one of the top 3 in my group is on or not

oh nice well there you go :)