Eh, I have a little fleet of 18' touring kayaks...I have been paddling the PNW waters for about 25 years...and I can tell you that I would not want to hook into monster ling while in my kayak. ;)
To be fair, Vik's kayak looks a bit stubbier and stable than mine (and open deck, where mine are all closed deck)...but still.
Years ago I was bringing up a small rockfish when I noticed a dark shape following it up from the depths...it was a 50 pound monster ling attracted to the struggling movements of the rockfish. Standing up in our aluminum boat (try THAT in a kayak) and with a rather athletic lunge I was able to net the big bastard as he was about to take a bite out of the smaller fish. That's how we got our biggest lingcod...that's why I don't foresee kayak fishing in my future...I would try it in a lake, but not in the ocean where true monsters can lurk. ;)
Another thing, sometimes a lingcod will actually jam itself into a crevice when hooked...many times thinking my lure was stuck to the bottom I would actually jam my legs under the side of the boat and pull on the line with all my strength, a last ditch effort to release the lure. Lo and behold, not only did the lure come free, but a good size ling would come up with it! You are simply NOT going to be able to get this kind of bodily leverage sitting in a kayak.
I will definitely be sharing some pics (maybe even video) of some lingcod fishing this Summer! Stay tuned!