New Moomba owner from Alaska. Just took my brand new boat out for the very first time and it looks like the heater core is bad/cracked. We have a short season and while I wait for the local repair shop and manufacturer to hash things out I was hoping someone could give me a pointer on how to just bypass the heater?

1) Is it possible to turn it off at the engine? If so, how?
2) If 1 isn't possible I could just attach in/out at the heater core itself, correct? Anyone know what size of tube and connectors I would need?

Any help would be appreciated. We have maybe 3 months to use these up here and I want to get it back in the water.