Niko
Some photos....sorry about the clutter...i have oars, two paddles, boat hook, sprit and a spinnaker pole down there as well as the lightboard cable.
The centreboard case is slightly lower than the seats 1-2cm but extends further back into the cockpit than the daggerboard version. When the centreboard is up (like in the picture) it is about 5cm higher than the seats, but when down, it is level. The quick release clam cleat on the back of the case is one of our mods to keep the board down but release quickly if i hit something hard.
The 2 spar supports hold the spars off the deck and give the cover a peak in the middle to prevent rain buildup.
regards
Paul