They sharpen their teeth on anything and I've had an occasion of a fuel tank on a string trimmer that was nawed thru. And then attack the wiring to the fuel injection on my boys car..
Micky mouse is not my friend anymore!
I don't know much about them, been in business for a long time, the 220 I have is heavy and I relate it to a CC 210 I had previously. The CC was more agile the searay is a Cadillac in comparison..
Process of elimination is the only way I know of. I'd probably start with the solar panels If the diode fails they can leak battery power during dark hours.
Your at a place where your probably better off gutting the boat rather than trying to piece it back. Even if most of the decking is just wet but not rotted the stringers under the deck are. A total resto can be easier than repairs.
