I have a quintrex coastrunner 455, when we get home I flush the motor, as this is happening we unload the boat of everything. Then as one washes with car wash and broom the other hoses off with garden hose, both inside and out, then get old fashioned garden sprinkler and put directly beneath axle, turn on... go get beer... finish beer, shammy dry, cook fish, more beer, you know how the rest goes.. cheers.
Danny