You do realise, that statistically if a male prisoner identifies as trans, he's more likely to be a sex offender, than the general male prison population.
It's interesting, though. You want us to include gay men, men who identify as trans, but only the ones who are same-sex attracted? Not your trans lesbians? And who else? Maybe old men? Disabled men? Or maybe just weaker men in general?
Or perhaps we could have a sort of Myers Briggs version of likely sex offending? And if you pass, you get an all access ticket?
Or, and I know this is really fucking radical, and like totally out there, but bear with...
... we could just ask the bloody women? The women who don't want men in their spaces, irrespective of what they're wearing, how old they are, or whether or not you bloody like them.
Revolutionary, I know!