Whale in bay

[SkunkBoat]

I see whales all the time. Humpbacks and Minkes. Sometimes a dozen at a time out in chicken canyon. In along the beach when they are feeding on bunker it is a sight to see. I have had them come up right at the boat while drifting live bunker and that always results in a double or triple bite of stripers.

If you didn't hit it, why do you think it caused your list?
If your fuel tank moved, that was a problem waiting to happen at the next big boat wake.There isn't much room between the stringers for a belly tank to shift that would cause a list.
I think you should investigate further and maybe not cloud your thought process with whales.

A list on V20s can be caused by clogged bilge pipe under the tank and clogged pass-thrus in the stringers. Water gets stuck in the space outside the stringer.
Anyways, not something to take lightly