I doubt it is the kayak. Tell me, do you usually fish from a boat or from shore? As there is a different technique ... from shore waters typically deepens as you go out. So you cast out a lure or pig&jig and let it sink, then bounce it back up the banking.
But fishing from the yak, you're probably out there a bit and casting to shore and if not modifying your casting placement and technique, your lure could be missing the structure.
And I am NOT implying you don't know how to fish, but the scenario above happended to me when I went from saltwater shore fishing to from a yak too. I had to learn different 'presentations'.
For bass, my motto is in this order ... structure - bait - presentation.
