I also want to highlight: the “edge of bubble” can be of “bubbles-yet-to-be” depending on their fleet comp. If they have several bubble-capable interdictor ships on gate, then while you align they may try to spawn new bubbles in the hopes of catching you in the outer radius of the sphere, which may change the geometry of the “shortest path to edge of all bubbles”. Reacting and changing direction in this case isn’t a big deal for ships with great agility – like your Helios – but it is a big deal for ships like DSTs which then have to update their calculus on whether to try to “punch through” or not.
(Plus your Helios is equipped with nullification anyway, right? )
The method I do is visual. For this, fortune favors the prepared. For one, you need a good Overview tab that shows plenty of celestial brackets, which are those icons in space. If you have something like the
Z-S Overview Pack, switching to the “Warpout!” tab will put a bunch of celestial & warpable brackets in space. I’ve been meaning to tweak it for my own preferences, but it is a good default.
Two, you need a little bit of luck on how you randomly spawned on the gate, where the bubble is positioned, where they are positioned, etc. You can then move your camera while orbiting your ship to look in the general direction that’s shortest out of the bubble. If there are some celestial (or cosmic anomaly!) brackets near the middle of your screen, you’re in luck. Most – but not all – gates in New Eden aren’t located way above or way underneath the solar system, so its pretty bad luck if the shortest path is “up” or “down”.
Third, it also depends where the gate campers are sitting in relation to you. If you have two “iffy” points, but they’re sitting closer towards one of the two paths, that can influence your choice of direction. If they are orbiting the gate, that can not only dictate which path you take but when you want to decloak: if their orbit is having them travel away from your chosen path, it will take them longer to turn around and then burn towards you, than if they had just been sitting still in the same location.
Note that these aren’t foolproof tips – knowledge is half the battle, execution (and luck) still matter. If the outcome is a negative one – never blame the luck bit, see if there’s something that could be learned & improved for next time. For knowledge’s sake or execution’s sake. Learning to be slippery is just one piloting skill of many.