I have a gas barbeque that I just LOVE to cook on.  
Really? Direct heat grilling is a great way to cook!
I love to cook tri-tip on it.
Interesting! Do you barbecue with charcoal as well?
No, I sometimes use those wood chips that have smoke flavoring
Woodchips
Woodchips are small to medium sized pieces of wood formed by cutting or chipping larger pieces of wood such as trees, branches, logging residues, stumps, roots, and wood waste.Woodchips may be used as a biomass solid fuel and are raw material for producing wood pulp. They may also be used as an organic mulch in gardening, landscaping, restoration ecology, bioreactors for denitrification and as a substrate for mushroom cultivation.
The process of making woodchips is called wood chipping and is done using a wood chipper
Indirect grilling
Indirect grilling is a barbecue cooking technique in which the food is placed to the side of or above the heat source instead of directly over the flame as is more common. This can be achieved by igniting only some burners on a gas barbecue or by piling coals to one side of a charcoal pit. A drip tray is placed below the food to prevent fat from the food igniting and generating a direct flame. Indirect grilling is designed to cook larger (e.g. pork shoulders, whole chicken) or tougher foods