Columbus - Friendship Cemetery - The ghost of a Confederate soldier can be seen at the back of the cemetery patrolling with his gun back and forth through the Civil War graves. Columbus - Mississippi University for Women - Calloway Hall - The ghost of Mary can be seen in the top floor window looking for her lost love.
Re: what causes a boat to porpus. A boat porpoises when the bow is being forced up into the air. It will will reach a certain attidude and then the bow will fall back down causing the up and and down motion. As to why your specific boat is doing this I can't say. Maybe try shifting a bit more weight toward the bow.
The sandwich described above is simply one example of the almost countless formulations boat builders use in modern fiberglass boats. The important point here is to know that any water that gets into the hole you drill can wick into the coring material. This water intrusion can cause severe damage to the hull and deck.