[Doolar]

The locks seem to be timed for about 2minutes and 20seconds. I use 2minutes to error in my favor.
approach first set of doors to about 200meters and then come to a full stop. a very slight drift < 1kt is good.

one set of doors will open for 2m20s
both set of doors closed for 2m20s
other set of doors will open for 2m20s
both set of doors closed for 2m20s
and so on

when you see the doors open that you need, go to 7kts you'll need this to get moving so to beat the timer. as boot gets about a 1/4 the way in go the full stop again and coast in, you'll be good. you might need to go to "back slow", to slow yourself down and not hit the other set of doors. try to come to a full stop. wait there between the doors for 2m20s. as soon as you see the other set of doors open go to 3kts and as soon as you see that you can make it out go to 7kts. to keep boot from drifting into the sides try to remain at 1kt


hope this helps, it works for me. alternative tactics welcome
the 2m20s is from open to close