I might shock a few (or a lot!) of you guys and SPs but I offer 15 minutes and even shorter (yes shorter) encounters. Of course there cannot be any connection during such a short period, but those who seem to come for less than half an hour don't seem to need any intimacy, only sex!
As an SP I don't mind it really, for me its kind of hot just meeting and have quick sex like that, but I don't expect any emotional connection at all though! I know my opinion might not be very popular on this board but I just wanted to offer another point of view and not discourage those who'd actually enjoy such an encounter!