Thanks.
Yes you are right - it is very quiet where I fly.

The lake is in Northern Montana and is small and there are no power boats allowed on it. Perfect for swimming, canoeing and fishing.
Due to the location of my cabin and the sun in the day, the best time for me to fly is in the evening or at dinner time - just when everyone else is sitting on their deck eating. So its not like I get drowned out by boats or jet skis - I'm the only one making noise!

I'm just trying to make sure that I do not cause undo attention or annoyance.

I would have thought OS would have made a silencer, seeing as they've done if for the 2 strokes.