Outboard questions for a mooring bouy

[SeattleSail]

I've searched the forums but can't find the answer to these questions:
How does one care for their outboards (esp. flushing the salt water) when using a mooring buoy? I'm moving a boat to a mooring buoy in the San Juans fro a fresh water lake and don't know how to best keep the motor running. It's possible that there could be a month or so between using the motor. I'll be pulling the boat from the water in the winter (for now).

My other question, I have both a newish 4 stroke and a old 2 stroke that runs like a top. For this maintenance question, is one better than the other. Of course, the replacement cost is much more with the 4 stroke. But the 2 stroke is-dare I say-reliable and I'd hate to muck it up.
Thanks, Carol

[sailingdog]

I don't think it is all that necessary to flush the engine. Hauling it up out of the water is really the most important thing you can do. Once it is out of the water, the fact that it has some salt water still sitting in it isn't a big deal, since the cooling passages that will have the salt water in them are usually made of all the same material, so the galvanic corrosion, which does the most damage to the engine, isn't going to be much of an issue.