Must have been a huge shark.
What was the distance between tooth marks
Looks like more than 2 inches from the pictures. Not many that size
I know that 1.75" is a 15 footer, 2+ inches equals Holy Crap

Here's a good 3 page thread on the topic (that I started last summer) with some good advice.

http://www.norcalkayakanglers.com/index.php?topic=93433.0

I got a dexter after this tread and like it.

the other fish processing tool I would highly recommend is a good set of shears.  I have some Milwaukee heavy duty construction scissors that have migrated from the tool shelf to the kitchen, and they are awesome for cutting the breast bone of fish I'm going to cook whole while gutting, for cutting off the collars on bigger fish, etc.

Good shears are important. Like to take some whole fish home to cook Chinese style or just plain tired of getting stuck by Rockfish spines ? Trim those fin spines off If you are putting the fish in a bag to take home to clean or cook or just to keep separate from your fishing partner's fish. Makes cleanup a lot easier if fish spines haven't poked a dozen holes in the bag

glad you are Ok.

SF is in the news now for  poor law enforcement results. Also home burglaries etc in SF are way up as crooks - same crooks - have shifted away from tourist robberies during pandemic.

Love those Monster Blacks at the Cove. No sub-limit this year where you are releasing 18 inchers cause you know you'd limit on 20+ inchers.

Mendocino coast !! Most of us have to drive 2-3 hours to get to the quality fishing you have. Definitely have your VHF radio attached to your PFD. No need for a vest over that. A decent fishing PFD will have enough pockets for your gear. Definitely leash your paddle. Deciding on leashing or putting floats on rods etc is a personal choice. A section of pool noodle on a net is a good choice.   You have an older model kayak, but they caught all sorts of fish before things got fancy. Two fish clips on about five feet of line. Keep your average fish on one and big Lings /Halibut etc on the other. Bleeding - not bleeding etc is a choice and there are arguments for both.  Just toss the fishy clips into your rear well.  Splash water on the fish occasionally and maybe have a burlap bag to toss over the fish to keep them wet and cool. Paddling with fish on a clip in the water is a bitch. But, if you are going with a drift, having them float beside the boat is fine. The possibility of Seals or Sharks is there, but remote. Its a judgement call among many judgement calls.  The most important thing is to have the proper safety gear and to find dependable fishing buddies who can back you up if things go south.

Or a custom rod and weapons rack (14 exterior rod slots and 10 interior cut circles for more rods, etc and rod tubes)
And -  an Amazon bought carousel for the trout rods. Screwed down PVC pipe end caps on the carousel to keep rods in place. 28 rods and room to grow.

 Show me your tackle boxes!  Sorry I don't have a camera with a really, really, really wide angle lens.
For a kayak all you really need is a couple 8"-10" plastic boxes the size of your side storage pockets or pouches and a small container of weights if you are ocean fishing. Anything else can fit into the pockets of your PFD