Hi there! I'm new to the forum and new to smoking. I'm a Vietnam vet (25th Div.) and former Probation Officer in San Diego. I've been retired for the last 14 years and have been spending much of my time with my favorite hobby - my nine grandchildren. My wife and I live in the country just north of Escondido, CA . I have a lot of experience barbecuing but zero experience with smoking or with my new smoker, which I intend to fire up later today. I purchased a Brinkmann Vertical Smoker (Trailmaster Limited Edition) a few months ago on sale at Home Depot (only $69), cured it yesterday, and will be smoking some Tri-tip for a birthday party this afternoon. And I need a little help. Most of the recipes for Tri-tip I've come across online are for a 2-3 pound roast. They call for about 2 hours cook time. I've got about 12 pounds of Tri-tip in four roasts. With this quantity of meat I'm figuring I'll need more cook time but I've no idea how much time that would be. Two of the roasts have been trimmed, the other two are marinaded and packaged so I'm not sure if those are trimmed or not, and I would like to know if I need to use the water pan in the smoker. It appears I should be cooking this meat at about 220-240 degrees. Does that sound about right? Any help out there for this newbie?