Reading the manual, I should have just a live well thru hull and a raw water wash down thru hull. However, I also have a third that is plumbed to the port side live well as if the boat was a 226. Was this a factory option? The boat is a 2005 model.
At 2 decades old, it's very much a moot point whether or not it came from the fatory like that. The next step, now, is to physically ID where the hoses go. We can guess all we want - but since the boat has been in the hands of who-knows-how-many- previous owners, all bets are off. All that matters is what is actually going on now.