Mels Lazy Method (and it works fine)- don't pre brine at all, just cut the loins in jar size chunks (3/4-1 inch thick). Smoke for 2 full pans worth (~2 hrs)at a cold smoke temp (little chief for me). Chunks will be a nice tan/smoke on the outside but still basically raw and firm (so they stay together) on the inside.
Add 1/8 tsp canning/pickling salt, 1/4 tsp water (to dissolve the salt) and 1/4 tsp Olive Oil (gotta be Virgin of course) to a 1/2 pint (8oz) jar. Double amounts for pint jars.
Oh- a clove of garlic for the Vampire inclined!
Can as normal non-smoked Tuna (11 lbs for 100 min).
Smoke time and canning time works out to be almost exactly the same. Works great to get the smoker going, clean and prep the jars for the first load. Load the first (pre-smoked) canning load and start the second smoker load. Prep the second set of jars/lids. Repeat process until out of Tuna and Cervasas!
Regular assembly line of culinary delights...Yummm!