This variation is using long plastic chenille.  Note the red wool butt as you can't place the chenille any further than half way without crowding the maribou tail.   Interestingly, I caught a large rainbow with this fly.  There are sunfish in the lake and maybe this triggered the response. 

This is a combo of Bob Sheedy's Bloody Killer and Orange Hammill's Killer.  You can't see it (but the fish can) is a red wool body with palmered gold tinsel.   Teal throat and tail.  I put the black squirrel on the head instead of the tail.  Flash is optional but a little might make the difference. 
Orange is a powerful colour esp in the fall for male brook trout.  They go after any possible rival during mating season.  Molted crayfish are also orange and a big item food source. 

We get about 6 weeks of brook trout fishing in the fall from Sept 1st to about mid October.  Some of our district shuts down Sept 30 because of a very old idea of reproduction protection which in reality cannot happen in our lakes.  It remains I believe to protect fish stocks for ice fishers!

This report is a composite of 3 separate trips to a "new" lake in my district of Eastern Ontario.  Originally a brook trout lake, an introduction of bass about 7 years ago decimated the trout, or at least the stocking each year.  MNRF decided on what I have been telling them at the Council for years and that is to stock 2nd year fish.  Very successful and I hope they will continue here and do likewise elsewhere.  Vampire Leech was the most successful fly but all manner of black leeches worked.  Rainbows are the most aggressive trout species and a joy to catch.  They almost always jump to the peril of our hearts. 

Dazzle Dubbing Black and Red body with white Phentex shell back.  This fly has been catching since the hatch right after our first frost.  The phentex post aids in sighting and creating some noise when jerked.