You always wan to blend in with the market.. so you have to watch the time and sales and see what kind of trades are usual, then make orders that wont stand out on level two... As far as the layering into a trade goes, When a base cracks and I really like the coin, I often take a nibble after the first little bit of panic... but then if a real panic happens, I will buy bigger and bigger with each buy.. always keeping an eye on your average position, so you know your break even point.. then you can start selling whenever you are in the profit.. Depending on the volume behind the bounce, I will take a quick profit or I will wait for it higher prices... Once im safely in profit, then I make those decisions based off how volume is coming in