pighog, if not using water try using a water pan in the smoker on the grate next to the firebox. A moist environment helps more smoke stick to the wood, a proven fact.
If you want more smoke flavor than the water pan offers, you can throw another fist sized chunk on the fire every two hours or so. It will burn white or grey for a little while right after it is added but not like in the beginning when the fire is just getting started, so no worries. For those stuck buying bags of wood like me the bags of "chunks" I buy often aren't much bigger than golf ball size, and by the end of the bag the chunks are not a whole lot bigger than chips. They carbonize into charcoal rather quickly. I toss in a handful every so often if the exhaust whiff of my hand doesn't reveal much smoke aroma.
Finally, if that's not enough wood flavor, try adding some of the strong woods to the mix like hickory or mesquite.