NMR,
I am sorry I am so late responding. I have transferred to a different job, so the adjustment has presented it's challenges.
Yes, I use the E signal from the 13 chart. I take a glimpse at the 8, but it is so close to my 13 until, it is typically very similar.
I do not use the 21. I use the 55 as my trend because I know I am most likely going to be in my position for 1-5 hours. I really like the 13 because it seems to work excellent with my trading style and techniques. When I get signals on the 13 along with a break in the previous day's high or low, I profit 9 times out of 10.
I am finding that during the summer trading zone, it is very important to know where your areas of resistance and support are. It is important to find those areas of support and resistance on your decision chart as well as your trend chart. My stocks are trading within ranges. It is pretty cool when YOU find clean R and S areas. When those areas are broken, something will always happen. When candles reach an area of S or R, they either go through it, bounces off of it, or flatline. If you know the tendencies of your stock, you will clearly know when to take the shot. Remember, if you choose to trade off small charts, you probably should have several indicators that you use to confirm a trade. If you are wrong and hold, praying for a miracle, you could lose money very quickly. You are either right within the first 10 or 15 minutes are you are wrong. For me, I give myself a maximum of 2 candles or 26 minutes on my decision chart. If the second candle starts to paint against me, I am out. If the first was flat and the second looks to be flat, I check smaller charts to see if candles are bumping on S or R. I much rather exit and take a small profit or small loss opposed to, staying in and facing a sudden drop.