What's interesting about that ramp idea......During an OCEAN meeting Scott Heppel was explaining the physiology of fish vertebrae, and how fish are designed to be suspended in water ("weightless"), and what happens when you pick up a fish by the tail (vertebrae separation). So it is reasonable to assume that sliding a big tuna up a ramp might help maintain the flesh quality somehow, especially in the eyes of a Tokyo Market fish buyer.
OK I'm reaching here

but part of being a tunaholic is giving each other false justification for getting more hardware on the boat!!
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The fish are still......where you find them.
I want some
Binnaga Maguro
"Anyone with a pulse can pass an on line test and get a boaters card" -
anonymous CG member