I am an instructor and Girl Scout program partner. I've been teaching kids since 2008. One of the reasons that I get a fair number of women, young and not so young, is that I respect them and believe them when they say they have been mistreated. I publicly advertise that I have state child welfare clearance, state police and FBI background clearance, and Girl Scouts clearance (which is actually more thorough than the state police and FBI based on how they follow up on references).
I have personally seen instructors and other dive pros treat women like crap and as sexual objects. Usually, older men (40 and up) who act like they are all innocent and just being friendly. I've had women come to me to buy personal gear because of the way an instructor leered at them or touched them when helping them select fins.
One reported that an instructor seemed to take an awful lot of time explaining how her BC chest strap should be adjusted. I told her she should have slapped him.
When working with anyone I always explain when I might be touching them, how, and why. If they are uncomfortable with any of those situations we find a workaround. They also know that in an emergency, I will do what's necessary to assist them.
I never touch a female student other than a handshake where it was stated, I extend my hand and they take it briefly. I do have female students that are huggers. Knowing this I let them initiate the hug and it's quick and over. I've seen other rub their backs, arms, etc. That's not me.
The touchy-feely stuff is just creepy. It's not being extra friendly no matter what the old sexist attitudes try to see it as. It's rude, ignorant, and should be met without fear of reproach or disbelief if it's unwanted and the person is told.
You don't, unless you're a pervert, just go up and start touching or rubbing on someone you just met. It is assault and it doesn't matter whether you think it is or not. The person on the receiving end is who determines if it's assault. Not the perp. The perps perception of what's ok and what isn't doesn't matter one bit. The victim is the one that counts.
Don't want to be accused? Keep your filthy hands off of other people.