I just bought an Eddyline Falcon 18, 2000 build in Kevlar. Sort of a “barn find” except it’s been hanging in a garage. The last Ohio registration sticker is from 2003 and the thickness of the dust on it made it look like it’s been hanging there since.
It has these odd, shallow grooves crossing the hull just inboard from the bow and stern. Similar to the paddle groove you sometimes see behind the cockpit, but shallower and only a few inches in from the bow and stern. And there’s a piece of self-stick Velcro in each with a mating piece of Vecro stuck to it (that might have been added by the kayak’s previous owner).
Does anyone know the purpose of these grooves?