How to Get Buyer's to sign an Exclusive Buyer's Brokerage...

In the past 8 years I have been selling real estate, one of the things I have noticed is that buyers are somewhat apprehensive about signing a Buyer's Brokerage (BB).  Our office has always instructed us to get a BB on every client before we even put them in our car.  As with most important things in this world, easier said than done!  I have found some techniques that work to a certain degree with clients.  However there will always be those clients that will not sign anything.

(a) Our office requires us to have a BB on file so that our agents are protected.
(b) If you feel uncomfortable siging an Exclusive BB would a Non-Exclusive BB be a better fit for you?
(c) Say I show you 10 houses and you end up buying through another Realtor, would you think it's fair that I did the work and now someone else gets paid.
(d) A BB protects your rights because if you see a house and the listing agent talks or presents you the property first, then you are now represented by the listing agent, as well. How would it feel to be represented by the same agent who is representing the seller. Whose best interests do you think they would have?

I will finish my thoughts later, I have to take my son home from work. Please respond to this blog with techniques that have worked for you. I'd love to read them.