RE:Taking some profits...Don't do it! To be clear it's your money and you should trade any way you like. In and out and in again has never been easier--$9.99 per trade, instant execution, all at your fingertips. Moreover you are probably correct about zinc in August, Trevali taking a breather after a fast run etc. and still you shouldnt do it.
Why? Because you're at risk of making the one mistake you cannot make. DON'T LOSE YOUR POSITION IN A BULL MARKET! Trevali will gallop and run higher, much higher, and you risk being left at the starting gate empty-handed and for what? To scalp a few points here and there?
Sit tight my friend. It's how the big money is made.