My rules are minimalistic and basically boil down to keeping things legal and on-topic, and even the "on-topic" rule is very flexible, even the most tangentially-related content will be permitted.
Much of the rules that exist are not really rules, but more like clarifications to head off any controversy tat comes up, I don't want arguments over nuance and trivial matters, I want a nice comfy board for discussion of matters broadly pertaining to female-female romance or sex, be it real or fictional, in any medium, etc.
I'm even allowing non-human females (monsters, animals, robots, etc.) to be considered in the same way as human females, and even allow for lesbian tentacle monsters (whose tentacles are given the same treatment as sex toys - phallic design/function vs. non-phallic/neutral).
I've also stated that solo female content is okay as well, and you may have noticed that most of these rules apply only to pornographic files, pics or images with males in them who aren't being portrayed in a sexual manner (such as having their genitalia visible), are also allowed. It's very lenient (especially compared to 4chan's yuri board).
When you realize how non-restrictive my rules are, and that they are open to change in the future should they still be seen as too restrictive, you might realize that this is a better fit for you than it might first appear to be.
I'm offering power and a position to add to your endchan resume, and a fun place to have intense-yet-fruitless discussion about your crack girl/girl pairings from popular series while shlicking/fapping to pictures of japanese cartoon dykes kissing each other with their lower mouths (tribbing). You might even get some funny yuri jokes/memes to share here out of the exprience as well.