Flush it when you can but don't drive your self crazy worrying about it. You can probably rinse off the outside with the dock
hose each time you come in and when you get the chance run some of those salt
disolving chemicals like Salt
Away through it. If you know it's going to be a long time before you use it again, then the effort to flush is probably worth while.
On the subject of starving the engine of fuel to empty the bowl, if you are going to run it again in less than a week, it's probably not useful. In fact it has some danger
involved when you do it to a two cycle engine. On a two cycle you are not only starving it of fuel but also oil
. An outboard mechanic
once told me that if I wanted to shut off the fuel and run a 2 cycle dry, I should listen for the RPM
to increase slightly, then turn the engine off. When you hear the increase in RPM
you know the engine is running very lean and that can damage a two cycle.