Depends on your appetite for risk HM. Quite possible to make a nice profit if you're lucky timing wise but the key is not to buy and sell so much stock that it changes the market price. Sadly for most of us we don't have that much money or we wouldn't spend all day on these forums.
With the overall lack of CHC volumes in the market, my guess is that the majority of trading takes place using market making liquidity computer algorithms (read Flash Boys by Michael Lewis for more*) and no one is really buying it, there is a standard float of shares in a dark pool somewhere, prob at GS. If you put too much demand into an illiquid stock you get ripped off royally.
(*I genuinely recommend that book for anyone who wants to know more about how the markets work.)