Just bought a new used boat. 1980 robalo 24 center console. i was told it was self bailing and did not need a bilge pump. i do not feel safe on the water without some sort of bilge pump. i was in the back water today for about an hour. when i came home and pulled the plug i noticed more water coming out of the hull than i would like to see. the transom is lowered in the back where the outboard mounts. some water comes over the back and there is a area where water comes in and out even when boat is just sitting in water. is it possibly coming from there? there are pvc tubes that run from the front of the boat to the rear area. i cant see an area to access the hull to install a bilge pump. any ideas or explainations that will make me feel more at ease? thanks for you time.