This is one of the best kept secrets in GoldMine. Did you know you can easily start searching on a field by simply double-clicking the field label? Not the actual field value, the field name. For example, double-clicking on the Contact field label will throw you into the search center, ready to search for a Contact. Same thing for every other field on the GoldMine contact record. Really, any field. I find this much more useful than trying to find the appropriate field in the Search Center drop down.
Try it, and have fun!