Originally Posted by thornbackflound
How do they work tho? if you don t mind me asking
You cut a big 'ole in the transom and seal the trunk to the outside of the transom. When deployed, with the boat underway, the trunk should stick out horizontally (bilges here we come!) and the vacuum effect of the boat travelling on the plane over the water sucks out any deck water. The trunk is held in position by a cord fixed from the end of the trunk to a cleat on the transom. When the boat has emptied, you pull on your cord which will result in your trunk ending up in a vertical position
. You can secure the trunk in this position by tying the cord to the same cleat. When the boat comes off the plane, the top of the trunk should then be above the water level, so the boat doesn't fill back up with nasty seawater.