What are some reliable ways to find a good Astrologer who is accurate in making predictions and offering practical remedies to issues ?

Astrology is such a subject with a vast knowledge, as per my realization, one human life is not sufficient to be a scholar of Astrology.There are few persons in our society practicing Astrology after completion of few months Astrology course, rather say doing malpracticing with this marvelous subject, but they are exceptions may find in like other professions also.Most of the Astrologers are dedicated themselves with a views of enlightened their own in terms of spirituality and realisations on the basis of which they serve the people providing Astrology consultations and predictions for mankind with a token consultancy fees that he or she deserves.
Like other Professions, Astrology also has its Theoretical as well as practical parts.The first one is almost same for all Astrologers but controversies arise from Second part that deals with Scientific and Practical Astrology, experiences , mode of thinkings,realisations, endeavor for experients on verious aspects of this subject.
It is really a practical question- how do one select or judge an Astrologer to be correct or perfect ? if we analyse it with a view of common peope, it is really confusing because so many judgements and decisions in life we are taken on the basis of predictions and advices of an Astrologer, if one is a really Astrology follower. If any Astrologer perfectly predict your Past and Present also, you may believe that his predictions about future may reliable and you may accepts his suggestions, guidance and recommendations for remedies.