I have had to good fortune to:
1. Land some moderately large fish in the yak, no monsters though.
2. Pull lots of heavy lobster traps into my yak. I have a 5 trap license and putter around with the traps in the summer.
The key to pulling in the big traps is to use the arm OPPOSITE the side of the kayak that the trap (or fish) is on. So if the striper is on the right side of the yak you keep centered over the yak and pull it up with your left arm. That is your only hope.
I actually stopped yak fishing in the surf. Waves will kill you if a bass pulls you into the surf. But I do yak fish quite a lot in estuaries and protected areas (like upper Pleasant Bay for example...at least before the cut).
Did you land the monster fish?