I stick to the red lights, I have used 6 different companies light products and the green lights frequently spook the hogs on my property vs the red lights.
Also, when you first put the feeder out sour up some corn or look around the web for some Kool-Aid, jello, strawberry soda recipes.
Use a post hole digger and make sour corn holes to get them initially into the feeder.
You sure do put in a lot of work just to kill a hog. Lol
Just set up a feeder or throw it on the ground if hogs are there they will find it quick.