Thanks guys for the feedback.
(Craig, imagine importing a 8C two Stroke from Australia!!!! Only 55LBS!
I'd never guess they were illegal in Nevada.)
To stir the waters, so to speak,
and if you are interested, find the Whaler Continuous Wave site and see if you can find these threads:
New Montauk: Engine Flushing Procedure.
Earmuff vs Backflush
Silently Flush Your Outboard Engine.
This last thread is older but if you can pick it up talks about using earmuffs while the motor is on the boat and in the salt.
Inventor of the 'Backflusher' specific for sailboats also has a few posts'
The corrosion problem is the same for all even if these Continuous Wave guys have 90 and 150HP OBs. The discussion centers around whether earmuffs will work with a garden hose on and the motor running in the vertical position.
Here is a plausible drill:
Shut off motor.
Leave motor on boat.
Tilt motor up.
Install earmuffs.
Turn on water.
Tilt motor down.
Restart motor.
Run until peehole water is not salty.
Turn off water
Tilt motor and remove muffs..
This supposes that the fresh water source is under pressure.
And this is of some concern for the guys on the Whaler site.
These folks are slanted toward Mercs and Yammys, and there is no mention
of a 6 or 8HP OB.
( It looks like the Backflusher never made it to production. Typing 'backflusher' into google
gets you directly to the thread at ContinuousWave.)