Nope on the silicone. I'd think that it'd do a great job as long as it didn't make the feather too stiff to give way when it contacts the riser.

I've shot goose feathers. Canadian to be exact. The primaries are softer than turkey feathers, so they won't last as long, but they make a great fletching that's somewhat waterproof without adding anything to them. When ever I go out to the local county park to do some hiking, I check out the area that a large blue/gray colored Heron frequents. Havn't found any feathers yet, but bet they'd work good too. I'm sure that you're aware to stay away from raptor feathers as they are against the law to possess, but other than those, I think any feather with adequate quill and mass would be fair game to an adventurous bowman.<img src=icon_smile_cool.gif border=0 align=middle>

Make em sharp and shoot em straight, or leave em home.