New Owner with questions

[DBG]

Yeah the impeller change is next on the list once I get the part. It's getting good raw water flow from what I can tell. Of course this is a new boat to me and I cannot tell what's typical. I think there might be a buncha junk in the fresh water system. I'm going to flush it out today and see if that helps. When I come off plane, the temperature climbs dramatically. Any ideas? I'm thinking possible blockage in the fresh water system.