Just tried this one over the weekend and it was excellent, and simple. Even my wife enjoyed it, and she's not a big game eater.
Soak the backstrap in apple cider for about 24 hours in the fridge. Cut the backstrap into 2 inch sections and let soak in BBQ sauce for 2 to 3 hours in the fridge. Allow to come back to room temp. Wrap in thick cut bacon so that the knife cuts are covered by the bacon. Cook on a charcoal grill (gas will work but the charcoal flavor is a huge plus on this one). Watch close so that the bacon drips don't flare up and burn the meat. Use a little water to kill the flare-ups if necessary.
Soak the backstrap in apple cider for about 24 hours in the fridge. Cut the backstrap into 2 inch sections and let soak in BBQ sauce for 2 to 3 hours in the fridge. Allow to come back to room temp. Wrap in thick cut bacon so that the knife cuts are covered by the bacon. Cook on a charcoal grill (gas will work but the charcoal flavor is a huge plus on this one). Watch close so that the bacon drips don't flare up and burn the meat. Use a little water to kill the flare-ups if necessary.