Im looking to setup some daggerboard raising lines, however, there is no groove in my daggerboard slots or on the daggerboards them selves to allow room for the line to go down the slot with the board. Id rather put a groove on the daggerboards than on the slots in the hulls. Whats the best/easiest way to cut out a groove in the Daggerboard to allow the line to go down either side of the board and through the hole through the board.
They are the older style 12inch fibreglass round bottom boards with no handle or cut out area near the top of the boards.

Cheers,
Michael.