i go to nov weather permitting, last year early dec. I trailer the boat put the drive down in the lot and then quick drain my block and mani. Drive home and hook up the muffs flush and drain again.
I unhook the hoses cup of antifreeze like i told you a cup into the water pump and a cup into the mani thats it.
I sometimes use the plumbers stuff if my friend gives me a gallon or 2 if not regular anti freeze.
Floater go hunting, it's season here now, but my deer slayer son went off to collage and my younger son the fishing machine has high school football i got no one to go with.