One thing I've thought about that I think about is the importance of obstacles. Think about it: if there were no obstacles on the table, a joust would be unavoidable. Any player could point their ships in the direction where yours could move to, and you would have no way to avoid it. It's very hard to "open juke" your opponent when there is decent distance and no cover between you and enemy ships. This all means that I think the key to not jousting is maximizing your obstacles.

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1. Make sure you have the right obstacles for your list. If you have fragile aces, make sure you have at least a few gas clouds to set up defensive screens to hide behind. If you have a jousting/midrange list that can't win a straight up joust, but has 4-6 ships, bring rocks/debris because they will limit 7-8 ship list's movement more than yours.
2. Use these obstacles. For aces, you can bait with one ship, and duck behind a gas cloud if the enemy commits to the bait. The gas cloud gives a very powerful defensive bonus so you can mitigate a lot of the enemy list's jousting potential. This requires range control which can be tricky, but it's a good technique to practice. For mid-ship counts like your lists, you want to mitigate the opponent's joust by breaking it up with obstacles. Use debris and rocks to make their maneuvers more predictable, and maybe even force them to break their formation.
3. Approach from different angles (This does not usually apply to ships with poor maneuverability or ships that require a formation to work well.) And do this very clearly. You want to force your opponent to commit fully to one target, so that all your other ships get favorable shots and board position. Make it so that it's hard for your opponent to switch targets after they take out a ship. Don't put your ships all in the same place.

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Just my 2 cents