How to navigate hot tub hangout?

Been hanging out with and being somewhat flirty with this girl I’ve known for a while now. She’s very open and flirty or VERY friendly with me. I asked her on a whim to hang out in a hot tub with me this weekend and I’m wondering what the smart way to navigate this could be. I’ve heard people throw a lot of talk about how agreeing to something like a hot tub date means percentages of being physical get a bit higher. But I don’t want to assume. How can I navigate this hangout and potentially get some (only if she’s down for that)?

How to navigate hot tub hangout?
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