Well you can make trainer for yourself if you like. But it take about 50min-2 HOURS to make 1 option plus it will likely work only on your computer etc.(Items, Energy, health and ammo was easy in BETA to make, but i have no idea how to find RECOIL) But they will likely work....but why bother. Time is precious.
PLUS you will FULLY enjoy trainers and cheats AFTER you taste game without it.
So why not let experts do their work.
Lifetime Membership is paid off with 5 trainers for me