I logged into PEQ the other day to check some stuff in KK (it's way bright on that server too
[You must be logged in to view images. Log in or Register.]), and to talk to some old friends. They informed me that it's pretty widely known that there are tons of people who 2-3 box on P99. I have seen it a few times, and even noticed a few people using MQ2. I have reported these people, but not sure what has become of it. Some of them even being members of some of the big guilds.
Unfortunately there is no way to have 100% total single-boxing. The big issue isn't logging 2 on for a port, or to trade items. It's the people boxing characters to take down mobs, level, raid, etc. that ruin the game. There is a reason I don't play PEQ anymore...