Try fishing these patterns as part of a team of two or three flies, use a heavy fly on the point with lighter patterns on the droppers, this way you will cover more depths and hopefully catch more fish.
Hook: Fulling Mill 31165 Super Heavyweight Grub
Sizes: 10-14
Thread: Black
Body: Black Thread
Thorax: Black Thread
Rib: Pearl Flashabou
Cheeks: Holographic Red
Breathers: Poly Prop Yarn White
Then Apply A Coat Of Epoxy On The Body and Thorax Of The Fly