I have a '96 Pro Craft V150B. The livewell has the drain hole at the bottom which I put the plug in to hold water. It has the hole at the top which water flows out of to fill up the livewell when I turn it on. It has another larger hole which, I'm guessing is the overflow and the water drains out when the level reaches it. I've never had water come out the top of the livewell. My question is, is there suppose to be a screen or filter of some sort in there and how do I actually work the livewell? I don't have a switch for recirc or anything like that. It's only on or off. I've looked for a manual of some sort for the boat but have come to find out those are like unicorns and nobody ever sees them, you just hear about them. Any help of any kind would be greatly appreciated.