otter board is the right name mate but my farther called it a slap board
after the sound the waves made against it.
the only way i could descibe it action would be like a lock on the old type fox snare
but the other way round.
as a wave lifted the board it would lock to the line, and as the wave droped it would relax and let line out
of maybe two foot at a time and wouldent take long before you had maybe four ,or five hundred yards
of line out and maybe 100 hooks and as a kid we always had fish to eat
tracks
I MIND WALKING UP AND DOWN THE LOCHS WITH THE OTTER BOARD [DEADLY ]