Thanks everyone! Great help and advice. Love this forum.
I had the mechanic
(since I'm still learning
this) check and change the oil, add in coolant and replace the impellers. We could easily see the impellers were chewed up, and so also chased down the chunks that ended up in the cooling
pipes and baffles.
(I definitely need to learn how to do... $700 later for a half day of oil change
, coolant added and impeller changes. Not major stuff... I'm considering it as my education tuition to boat life school)
We also discovered that my overheating alarm sensors are faulty. Need to get those replaced.
I've since taken the boat out, and everything seems to run as before. I now watch the guages like a hawk.
I've creating a checklist for departure so I don't have to think:
fresh water hose connection, dock
electricity lines and turn off dock breaker(s)
Visually inspect and clear or secure any other objects that may be tied to the outside of the boat (kayaks, tenders, waverunners, debris, etc)
Visually inspect and stow or secure any objects that may be loose on the decks (heaters, propane tanks
, chairs, pop-up tables, awnings, etc)
Visually inspect to all sheets
and lines are clear and clean laying, unobstructed or knotted their entire length
Remove window shades
Visually inspect and stow or secure any objects that may be loose in every room and cabin
(computer, tv screens, speakers, hanging wall pictures, countertop ornaments, dishes, groceries, etc)
Ensure source of fresh drinking water
available (bottles or igloo)
Sniff test of engine compartment
SEACOCKS OPEN (I don't need keys to start engines, so may add something like "remove before start" banner/pin hanging on them)
bilge functioning check
Fire extinguishers handy
Visually inspect engine compartment and stow or secure any objects that may be loose
Once running, check stern exhaust for normalcy (no blue, white or black exhaust) and water displacement
on and functional
Life vest on or at hand
Any other items to add?
Many thanks again to all the helpful replies!