Every so often tri tips go on sale around here for $1.99/lb, and when they do, I always stock up. They are usually untrimmed.
Trimmed - Quite a bit of fat
Seasoned w/ a free sample of the Santa Maria Style Rub from The Rub Co. - Thank you
Cooked indirect until I hit 120* with charcoal and hickory, then direct for about 5 mins/side. Pulled at 135*.
Proof that I pulled at 135* (For some reason the following pics make it look more well done.)
I like 'em thin