The DOM does not show the true depth of market. The market depth is detected only by paying attention to the prints. In my trading, I focus on the trades taking place at "significant" levels. If I see price moving down, while hitting a small amount of bids, I determine that there is no buyer at that level (prices are rejected). When I start to see prices slow down, and see a higher number of bids being hit, I infer that there is a buyer who sees "value" in this level. This is usually a good place to bid for a long. On the other hand, if prices are moving up, I look to see how many contracts are being lifted. If I see prices going up through a small amount of offers, I wait until I see a slowing of momentum in upward price movement, yet with consistent lifting of offers (the market chasers). This of course is the time to sell the long position, and go short. Of course, reading the tape must be accompanied by a reasonable awareness of key market areas (ie market profile).