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. 

Water is still a bit warm for C&R so I'm not taking pictures of the fish.  It is possible to encourage long line releases by not setting the hook and letting the line go slack.  I managed that four times the other day but two had to be let off at the tube quickly. 
This is my new version of the Orange Hammills.  It allows an inline arrangement and less tangling.  Worked well and caught fish.   Orange certainly seems attractive especially to Brook Trout. 

This a trout version of a new series of flies I am tying.  I'm still working on the bass and pike types which have been very successful.  Water is too warm for C&R on my trout ponds so I may have to wait but if we have a cool stretch before Fall, I'll be out trying it.  Theory is that it must be attractive to see a minnow with a leech attached.  Being a trout fly, I deliberately made it as slim as I could with only a bit of flash.  They can be easily spooked. 

Got out a couple of times last weekend.  Water is colder than normal for this time of year.  But the trout were biting!  And a few hatches of boatman and midges were seen.  Few rises.  It needs to warm up a bit more for any dry action.  Orange Hamills  is still #1 fly but my new LOM is working too.  More on that later.