Thanks for all the replies
Due to time constraints I'll marinate for a couple of hours, then dry, then cook.
I'll go with the Santa Maria Pit (I'm doing an awful lot of cooking on that thing these days - even bought a little "tailgater" model that will just comfortably fit a good size Tri Tip to take Camping
) and mop frequently.
Any idea as about how long to get them done? (just for planning - I Thermapen just about everything)