I also tell my new clients to make a list of Must Haves, Must NOT Haves and Would Like to Have, but if not, its not a deal-breaker. That will help the agent save you time and gas money seeing things that don't really interest or appeal to you. Finally, are you pre-qualified for a certain $ amount to buy? It does no good if you or the agent finds the best home in the whole world, if you aren't able to buy it, so find a banker or a mortgage broker and in about 30min or less conversation on the phone, they can tell y ou a dollar amount that you could qualify for on a loan.
I wish you lived closer to me, I would be happy to help!