One issue that always comes up when I talk to a potential Bull is “ how far can I go”.  In other words, they know that tickling my wife is going to get them excited, and they want to know if sex is on the table.  I never know how to answer, other than say intercourse is definitely out.  But I know, as does my wife, that it’s really unfair to get some dude all horny and then send him home.  I think with the right guy she may, MAY be open to a hand job, but that’s it.
But this is where it gets complicated.  You’re going to let a perfect stranger tie up your wife.  Then what. What if he refuses to stop?  What if he is a huge strong dude that you can’t handle one on one?  I know these are my wife’s biggest concerns.