Okay, it looks like the AF1 Agent strat posted my Lecmasta works well; I haven't played PD in ages, and I turn the game on, in 3 tries I get a 57.40.
There are many possibilities; they start with the president. You can either go up the stairs and take the normal way or go right, the shorter way (I think). Now, when you are in here, you can do 2 things that work decent for the president;
1) The first would be to strafe him over towards the normal way, but make sure he's next to the wall, so that when you are ready to leave, you can get all the way by the stairs. This means you will get to the room after the mine part and the 2 K7 guards won't be there, so you can just run to about halfway or three fourths of that room before activating your boosts and then pulling out laptop.
2) Strafe him over towards that door again, but instead of going out that door, go out the opposite door (if you go up the stairs and go right, it's that door). Get out and wait until the cutscene...the guards sometimes won't be there. This strat works wonders with the president as far as warping goes; sometimes you will do the next part fast and then when you are coming back up from the last kill in the basement, the door will be shut be he will already be past it! If you activated your boosts in the middle of the K7 guard room and he made it past the door before you got upstairs, you can easily push him to the end with the boost not wearing out. It will finish right as the president stops in the pod. This is what I did on my recent 57.
Also, here's another idea; if the 2 K7 guards are in the room and you want to activate the boosts late, disarm the guard and then activate the boosts as far as when you are past the first door; you can use the K7 to kill the blondies since it pulls out much faster than the Laptop, giving you extra time before the boosts.
I'll post up some more soon, got some serious DDRing to do.
