gg12 good call, I would expect a correction at your next resistance 13040, too. At this point there is also a chance that the ym enters a trading range around 12950 and 13040. As it is, just speculation.
If I would have entered at 13000, a trailing stop is a good idea as you said.
Concerning backtesting, I use Metastock, so I am not of such a help. I am still more a discretionary trader, but would as well backtest some ideas, especially some relative strength ideas.
Some people say, RS is not working anymore, but I cannot agree.
Markets are in a tug-of-war, as you all know. Arbs and order flow from one market to another is ruling. Thats most impotantly the reason why markets are moving with of course many other considerations. You can see the order flow with RS on the chart.
But do not enter when stock, etc. is strong, wait for a pullback, otherwise you pay the premium for others, who are entering cheaper. Go with the order flow!
So the pattern is: strong, weak, strong, weak, strong, and so on => higher highs and higher lows !!! most importantly!!!, it all happens in a upmoving fashion. This is an ideal strong uptrend.
Sundog