Do you rely on 'models' to predict market moves?

You should if you think that a model that is able to explain 36% of price moves is a useful tool. I for my part would be sceptical. Remember, investing is part science, part art otherwise we would all be millionaires (or billionaires to bring this up-to-date). As the author of this particular model was a long-serving staffer at the Value Line Investment Service let me mention that I think that publication is the best value product in the market for investment services. Not perfect but for the price it beats all expensive 'research' departments that are housed in Brokerage and Fund Management firms.