Rochester is a big "little" city. Not a lot going on down there for fun. Now that the titty bars are closed, even less. LE has done some stings in the past, so be careful for sure. You would have more luck if you can drive up to Minneapolis area. Much safer and tons more options. Bloomington area is south of Downtown by 20 minutes in your direction. There is a guy on another site that has posts about Rochester and LaCrosse WI recently.
www.usasexguide.nl I have no experience with any of the girls he has posted about, but they are there.
Good luck, use caution for sure, and sorry for the wasteland.
Go4MN