I think the key is to fragment the ai's worlds and go more of an archipelago style (is that correct? archipelago=less connections to your empire?)
Yes, this is correct. However, disconnecting the AI empire isn't the goal of such strategy. But it could be an interesting side-effect. A !!fun!! side effect when the Hunter plot is enabled.
but i think that would cost a lot of AIP if you took out all the warp gates between all your planets.
1) false: a gate cost 5 AIP; a whole planet cost 20 AIP. So gate-raiding 4 planets is more interesting in term of warp-dampening that taking one planet for the same price.
2) this isn't how to go archipelago/damn-low-AIP (IMO). Just let the waves hit the isolated planets and defend them independently. This is a bold strategy, but with a damn-low-AIP level, it's manageable.
Also, don't forget/hesitate to hack for knowledge, because with such strategy, you'll be short.
Oh, and I almost forgot: only hit planets with a CSG. The ultimate goal is to capture the fewest planets, so the minimum is 4 to take down 4 out of 5 CSG A-prime, plus one per other CSG network: B, C, D, E. B-planets can be taken twice because they have AdvFacto and Adv Starship Constructors, and sparing enough Knowledge to hack one of them is... complicate. Anyway, you need your HaP for K-hacks.
i have never really understood how to defend when i have multiple hostile wormholes, so i tend to do a lot of gate raiding leading to high AIP games.
Yeah. It took me a long time to master that, and I'm still not perfectly safe with this "outfit". I'm "enough challenged" at 8/8 in a regular playstyle, but 8/8 with archipelago is a little bit ahead of my current level. The thing is: Kahuna-style defense isn't reliable on a planet with many hostile wormholes. I often use military (MkI, because I can't afford MkII) and long range turrets (missile, sniper). Capturing the MkV sniper/spider controllers is a must-have, and may justify 20 more AIP.
Last advice: for a slightly more resilient strategy, try to pair your planets: if one falls, the other one still provide supply to its turrets and don't let the offending fleet escaping (and joining threat-fleet) unpunished.
i only have a moderate knowledge of the game and strategies to use. i often spend hours on pause trying to figure out what to do next. reminds me of a game of chess.
This is why I love this game too.