Barry,

 My wife and I made it up the points where the NTSB said your prop was but we did not find it.  The "most probable" point is in a thick growth of aspen trees with quite a bit of under brush and grass.  From there, I walked up to the "more probable" point.  It is straight up the ridge on the edge of the aspen grove with not so many trees, but lots of grass.  The "less probable" is further up the ridge and over the east side a ways.  It is mostly scrub and grass.  From there, I zig zag-ed my way back down to the "most probable" spot. 

 If you are looking from the air, the terrain probably looks pretty benign but it is steep, rocky and lots of brush.  The particular ridge should be recognizable by a rocky outcrop a couple hundred yards uphill from the aspen grove.  The less probable point is below and east of the outcrop.

Of interest, we plotted the location on a National Geographic map and somehow ended up way off from the GPS coordinates.  I haven't rechecked the coordinates so am not positive we plotted te map correctly, but we were pretty careful.  My wife, schooled in geography, says it may have to do with the map datums.  The GPS points did correlate to the pictures you gave me.  We went up from the Frying Pan Road a few miles past the marina road.  We thought that would be the best course because of our failed plot.  Ended up walking quite a ways around to avoid private property.  On our way back we discovered the best way up would be through the housing development above Reudi.  From there, there is a dirt road/trail that gets you pretty close to the area.  I don't know if it is gated or even public access.

 I would not expect to be able to go up on dirt bikes.  Between the steep terrain, fallen logs, and heavy brush, I don't think they would be effective.

 Please let me know if someone finds the prop.  I may go back up sometime to look around some more if no one finds it.  Perhaps in the fall when some of the leaves are down.

 Oh yeah, we did have our hopes raised at one point when we were within about 50 yards of the "most probable" point.  In the brush we noticed a glittering metallic object.  It turned out to be $2.44, mylar, happy birthday balloon.

 Wayne