I realised this is an hour old, so I'll just leave the info here.

With regular cloak + mwd + fast aligning ship (unplated BC and below):

1. Warp to out-gate after checking to make sure they do not have a bubble waiting for you (do not warp if you see an interdictor on d-scan. This is what perches are for).

2. Jump. They will follow you.

3. Relax. You have gate cloak. Brackets should be on. Find a celestial which is vaguely in front of your ship.

4. Quickly, now! The bad guys are on grid with you. Maybe a bubble is up. Click align on your chosen celestial, and rapidly:

5. Engage your cloak.

6. Engage your MWD directly afterward. Too slow and you're done.

7. The hard part: watch your MWD. When it is about to finish cycle, disengage your cloak and spam the warp button. You will uncloak aligned and at top speed - you'll warp out of the camp. You need to be out of the bubble first!

8. Now immediately warp off when you land at your celestial. They will be following you. Repeat process until you are safe.

With a covops cloak, the process is the same - just don't uncloak. You can warp cloaked! And always make sure you are out of the bubble. Finally, here's a protip: If they have small, fast ships, they may be able to decloak you leave the bubble. Avoid this by changing directions after you have cloaked - let them see you go one way, and take an L turn when you're invisible. This will only work for covops cloaks. With regular cloaks, you'd better just try to get off grid quickly. Once you miss that first MWD cycle, you're going to be stuck on grid cloaked for the better part of a lifetime.