In many ways this question mirrors Asking a girl whether she would like to dance with me
The setting: I am alone in a nightclub. I am located in a city/region known for being culturally progressive and sex positive. Loud electronic music (generally house, or other electronic music) is a constant, conversation is conducted by near-yelling directly into somebody's ear and/or lip reading. At least some random contact with others in the crowd is expected, especially since I am dancing. I do my best to be friendly and polite with other crowd members; at a good event, with a good crowd, I feel that there is a strong emotional force and kinship generated between members of a crowd all dancing together. I am generally open to dancing with anybody else in the crowd.
When I say "with" I mean, non-verbally acknowledging each other, sharing floor space and making space for each other. This may include more than just me and another person, more people generally make it more fun. Some physical contact may occur, perhaps some jumping up and down holding each other's shoulders, but does not include (as far as I'm concerned/know), anything inviting more intimate dancing from those around me. Colloquially I have heard this sort of dancing with people called a "dance pit" or "dance circle," I couldn't find a good youtube video, but if you've been to a dance music event, you have likely seen me and my ilk. I am not talking about a mosh pit, which I enjoy on occasion, but would be astounded if somebody managed to exhibit the following behavior in while moshing.
The issue: I will occasionally get too much attention from somebody (not limited to one gender). People will non-verbally communicate the they want to dance more intimately with me. Sometimes this is simply beginning with physical contact that I am fine with and start progressively getting more intimate, some people are very quick to get down to some "dirty dancing". I have not felt violated or unsafe because of any of the behavior I am asking about, I would be okay with most (depending on the person, all) of this interaction if I were single/non-monogamous. I am however, happily monogamous with my partner, who is not in attendance, and I feel that becoming too intimate with another person on the dance floor will be a violation of that trust, nor am I interested.
Desired outcome: I want to turn down/discourage intimate attention on the dance floor politely, while communicating that I am open to and interested in more platonic dancing.
Current Strategy: For those that quickly place me in a situation I feel is too intimate, I will gently, but firmly grab their wrists and move their hands off me while moving the rest of my body away from them, sometimes by moving them (also gently, but firmly). For people who take a more slow and respectful approach, generally more subtle cues such as guiding hands away from me, maintaining a certain distance between bodies or only touching hip to hip generally works. Often people will show initial interest, but will get the message when I do not escalate (these people are great).
If people don't get the message on the first approach (most do), I will resort to leaning in and saying something along the lines of "No thank you, I'm taken" or "Thanks, but my partner and I have boundaries." I try to convey a friendly countenance (a smile and calm, smiling eyes) while delivering this message to show that I am not upset, but I am serious. If this doesn't work, I am likely to be a bit more firm in pushing the person away and disengaging and will just move away from them. The few times this has been employed was mainly to the level of intoxication of the person and even they understood me moving significantly away from them. If I am made uncomfortable or feel threatened then I would move away and involve bouncers, but I am asking about interactions that do not warrant that.
In what ways could I improve or modify these strategies to turn down the advances of others beyond platonic dancing?
Non-verbal communication and body language are the main and preferred communication medium
Rationale for your answers is, of course, expected.
While I identify and present as male, I would prefer an answers to this question be gender neutral unless clearly stated why my gender matters to this situation.