Just a thought
I've always removed the smaller tuna/albies from the water. I have found it best to revive by sending them head first back into the water. Somewhat forcefully and from about 3 feet above the water. It gets them going in the right direction and revived.
I have NOT had much luck just waving a tuna back and forth at boat side.
Big tuna (over 70 #) it is best to put the boat in gear and hold them along boatside to force water thru the gills. I do this with a small hand gaff thru the lower jaw.
All that said.... I'm not sure how many become crab bait.