What effort do you make to buy only in up markets?

Actually, I buy in any market (bull, bear, stagnant, etc.).
That’s the beauty of using a stock analyzer like the BTMA Stock Analyzer. It allows me to quickly analyze hundreds or thousands of stocks in a few seconds. 
Then it sorts the stocks with the better stocks at the top and the riskier stocks at the bottom. I’m presented with just a handful of recommended or possible stocks to buy.
So, it saves me time and I’m able to find good stocks to buy any day of the week.
It’s also important to note that even if the market is going down, there are still individual stocks that the market has mispriced. Therefore, you can buy an undervalued stocks at a great discount, and even when there’s a bear market and the stock market may be going down, this individual stock that you bought at a great discount, could start climbing in price towards its real value.
I hope this info is helpful.
-Grant