I am building a trainer with a .25 2-stroke that I'll fly in the fields behind my house - around a few neighboring houses within ear shot. I can fly electrics here no problem but am concerned with the noise of a 2-stroke. I don't want to go electric because I have the .25 laying around from another plane (that wanted to be reunited with the ground WAY sooner than I had in mind), and besides - I love the smell of burning glow fuel. I have researched on line and found very little in the way of aftermarket products for quiet pipes. One company I found is flyquiet.com - their claim is up to 10-12db quieter than stock mufflers. I'm not even sure this will be enough though. Any tricks or product suggestions?

Also, I realize that the bigger prop I use, the less RPM I will be turning and therefore creating less noise. In theory. Any suggestions on props? the plane is a 56" trainer with flying weight of around 50-60oz. Thanks.