Nice trade on ELBO, I made about .35 on the opening break above 23 then left it alone. While FHCC did not open like I thought, it provided several good opportunities on the short side.
I think it would be very difficult to backtest gap plays like these, because they act different depending on overall market conditions. This is probably a variation to whatever strategy you are trying, but I have had success the last few years tracking NASDAQ stocks which gap up or down, and just using simple support and resistance breaks. I will often follow these stocks for several days after the initial gap.