I have never cooked a tri tip roast with any method, and I don't think I've even tried it before. But a friend of mine grilled one last Sunday and sent me a tantalizing photo.
So, assuming I could smoke one, I checked here and found this old thread
Tackled it today. Turned out well, but my rub (as it were) was a little too heavy on salt and paprika. Smoked for about an hour and seared on the grill.
I dig it. (Do you like the flowery plates?)