I have the small Smoke Hollow gas smoker, and have found that using small wood chips ( it really variable in size some looks like sawdust) the maximum time I get is about an hour before I need to add more. The local store has larger chips, but only in a couple of flavors (no fruit wood). I am thinking of mixing these larger chips of hickory, with the smaller apple. Anyone have experience with this? I tried mixing in a bit of red wine to the chips, all it did was take forever for the chips to start smoking. Thanks for any tips.