Gentlemen: How do you look when you're hot?

FWIW, I've flushed my block and rad with different brands of coolant system flush, and what worked best, other than hot tanking a bare block or having the rad professionally rodded-out, is popping some left side soft plugs out of the block, and using a coat hanger or welding rod, and a garden hose with a focused stream of water, rake and flush the water jackets repeatedly until all the rust and sediment is flushed out.